Lecanemab is an antibody used to help reduce the effects of Alzheimer’s disease, a progressive condition that affects both the brain and memory. It has been shown to be effective in slowing down the progression of symptoms and helping patients retain their cognitive abilities for longer periods of time.
What is Lecanemab?
Lecanemab is an antibody-based treatment option for individuals with Alzheimer’s. It works by targeting and inhibiting a protein known as amyloid beta which accumulates in the brain, causing memory loss and cognitive decline. By preventing this buildup of protein, lecanemab can help improve or maintain the function of neurons in the brain.
How Does It Work?
Lecanemab works by targeting and inhibiting the action of a protein known as amyloid-beta. This protein accumulates in the brain, leading to deposition of amyloid plaques which are associated with memory loss and cognitive decline. By preventing this buildup of protein, it can help improve or maintain the function of neurons in the brain. As a result, it is believed that the drug may be able to help slow down or halt the progression of Alzheimer’s disease.
What Are the Benefits of Lecanemab?
Recent clinical trials have shown that lecanemab offers many benefits. These include improved memory, increased ability to handle day-to-day tasks, improved functioning in social and occupational settings, and a slowed decline in cognitive abilities. Additionally, the drug may also help reduce symptoms such as agitation, irritability, and depression. Thus, it may be an effective treatment for managing the symptoms of Alzheimer’s disease.
Researchers also saw reductions in the levels of tau – the protein responsible for the neurofibrillary tangles that accumulate inside the neurons in patient’s with Alzheimer’s. And they found reduced levels of other proteins that measure brain injury and degeneration. This suggests that lecanemab could potentially address the disease by targeting it through both direct and indirect pathways.
The first phase 2 study published in December 2022 enrolling 856 participants reported significant reductions in amyloid plaques on brain imaging tests, reductions in blood measurements of amyloid and tau protein and slowing of disease progression.
The second study published in January 2023 and including 1,795 participants also showed beneficial effects, along with a reduction in the amounts of beta-amyloid measured in imaging tests and in the blood.
What Are Side Effects ?
While lecanemab is generally well-tolerated, there are some possible side effects associated with this treatment. These include headaches, nausea, and dizziness. Additionally, people may also experience behavioral symptoms such as agitation and confusion. It is important to talk to your doctor about any side effects you experience while using lecanemab, as they may be a sign of an underlying problem that needs to be addressed.
Who Should Consider Taking Lecanemab?
Lecanemab is approved for the treatment of Alzheimer’s disease in people aged 55 and older with mild to moderate symptoms. People who have early drug-naïve Alzheimer’s may receive the most benefit from this drug. Additionally, it may be beneficial for those whose disease has worsened despite taking other medications such as donepezil or memantine.
Facial numbness is an absence or loss of sensation in any part of the body.
It can be a symptom of many health problems, such as migraine and allergies.
Numbness usually occurs as a result of nerve damage or disruption of nerve function.
Numbness is a loss of sensation in any part of your body. Facial numbness is not a disease, but a symptom of something else. Most causes of facial numbness are related to nerve compression or nerve damage.
Nerve disorders can sometimes be due to poor health or an allergic reaction, but they can also simply be a response to cold.
Migraine: a possible cause of facial numbness
Migraine is a possible cause of a numb face.
Migraine is a condition that causes severe headaches and other symptoms. Some people experience facial numbness during a headache.
Migraine has four phases:
Prodrome: early signs of migraine include unexplained mood changes, uncontrollable yawning, fluid retention and increased urination.
Aura: People experiencing aura may see flashing or bright lights or zigzagging lines. They may also experience muscle weakness. The aura stage may occur just before or during the headache phase, but not in everyone with a migraine.
Headache: The pain tends to be on one side of the head and usually worsens when the person moves. People may feel a painful throbbing or pulsing sensation. Other symptoms at this stage include numbness, nausea and strong sensitivity to light, sound and smell.
Postdrome: The person may feel exhausted, weak and with moments of confusion.
There is no cure for migraine. However, individuals can take painkillers or prescription medications to decrease the frequency of episodes and reduce symptoms.
During a migraine episode, a person can also:
rest with their eyes closed in a dark room.
place a cool cloth or ice pack on the forehead
drink plenty of water.
The numbness from the migraine usually goes away after the episode is over.
Allergies
An allergic reaction occurs when the body’s immune system reacts to an allergen, which is a foreign substance that is usually not a health hazard. An allergen can be something the person has eaten, inhaled, injected or touched.
Some allergies can cause numbness in the face. Other typical symptoms of an allergic reaction include:
coughing
sneezing
itchy eyes
a runny nose
a sore throat
a rash
hives
A severe allergic reaction, called anaphylaxis, is very dangerous. A person having a severe allergic reaction will need emergency medical attention. They may have:
Low blood pressure.
Difficulty breathing.
Swelling of the throat.
Bell’s palsy
Bell’s palsy is a form of temporary facial paralysis. An affected facial nerve can cause this condition.
Symptoms tend to appear suddenly and worsen within 2 days. They may include:
tics
weakness in the facial muscles
an inability to move one side of the face
a drooping eyelid
confusion
pain or discomfort around the jaw and behind the ear
ringing in one or both ears
headaches
increased sensitivity to sound
speech problems
dizziness
difficulty eating or drinking
Doctors may recommend steroids, antiviral medications or pain relievers, such as aspirin, acetaminophen or ibuprofen.
There are different types of stroke, but this condition always requires immediate medical attention.
A hemorrhagic stroke occurs when a blood vessel that carries oxygen and nutrients to the brain bursts. An ischemic stroke usually occurs when a blood clot blocks one of these vessels or atherosclerosis narrows it.
When the brain does not get the blood it needs, the neurons die.
A stroke will occur suddenly and, in some cases, can cause numbness in the face. The person may also experience the following symptoms
confusion
difficulty seeing
difficulty moving
a sudden severe headache
Multiple sclerosis: a disease that can also cause facial numbness
Multiple sclerosis (MS) is an autoimmune disease that affects the brain. MS damages the central nervous system and causes a variety of symptoms, including numbness.
Some of the common symptoms of MS are:
numbness or tingling in the face, body, arms or legs
fatigue
weakness
dizziness and lightheadedness
sexual dysfunction
pain and itching
difficulty walking
spasticity (involuntary muscle stiffness or spasms in the limbs)
La sclérose en plaques (SP) est un trouble neurologique qui perturbe la communication entre les neurones en raison d’une inflammation, ce qui entraîne la destruction des gaines de myéline.
Ces gaines de myéline sont des couches grasses qui servent de protection pour les cellules nerveuses et permettent la communication entre ces neurones. En raison de cette rupture de communication, les personnes atteintes de SP peuvent souffrir de dépression, d’anxiété et d’autres problèmes de santé mentale.
Les circuits neuronaux associés à la dépression sont déréglés par les lésions causées par la sclérose en plaques (SEP). Une étude récente a utilisé une technique de cartographie pour examiner s’il existait une relation entre les lésions de la SEP et ces circuits.
Les chercheurs ont découvert que les lésions de la SEP affectaient les mêmes zones du cerveau liées à la dépression.
Pour une nouvelle étude des chercheurs ont étudié le lien entre la sclérose en plaques et les symptômes de la dépression. Les données comprenaient des informations sur 281 personnes atteintes de SEP, notamment des scores de dépression autodéclarés, des niveaux d’incapacité et des données d’imagerie par résonance magnétique (IRM).
Les résultats fournissent une preuve supplémentaire du lien entre la SEP et les problèmes de santé mental tels que la dépression.
Les chercheurs ont utilisé une technique appelée cartographie des réseaux de lésions pour examiner la prévalence de la dépression chez les personnes atteintes de sclérose en plaques.
En comparant les images IRM de personnes atteintes de SEP à une base de données préexistante de connexions neuronales de 1 000 autres personnes, ils ont pu identifier les circuits neuronaux liés à la dépression.
Leurs résultats montrent que les participants atteints de SEP qui présentaient des lésions dans ces circuits neuronaux particuliers avaient tendance à avoir des scores plus élevés aux tests évaluant les symptômes dépressifs par rapport aux participants présentant des lésions situées ailleurs.
Des études récentes ont mis en évidence le lien entre la sclérose en plaques (SEP) et la dépression. Il a été constaté que les lésions associées à la SEP sont connectées aux mêmes voies neuronales que celles affectées par un accident vasculaire cérébral, la stimulation magnétique transcrânienne (TMS) et la stimulation cérébrale profonde (DBS). Ces traitements, qui peuvent modifier les symptômes dépressifs, donnent un aperçu du lien entre la dépression et la SP.
Le Dr Barbara Giesser, neurologue à l’Institut du Providence Saint John’s Health Center à Santa Monica, en Californie, déclare que sa récente étude a établi un lien entre la dépression liée à la sclérose en plaques et les lésions cérébrales structurelles (p. ex. AVC) présentes aux mêmes endroits du cerveau.
Les personnes atteintes de sclérose en plaques (SEP) sont particulièrement susceptibles de souffrir de dépression. La dépression chez les personnes atteintes de SEP est généralement due à une combinaison de dommages structurels dans le cerveau, de prédispositions génétiques et de facteurs de stress environnementaux liés à leur maladie.
De plus, certains médicaments prescrits pour traiter la SEP peuvent également entraîner des sentiments dépressifs.
Malgré les preuves de recherche encourageantes, des recherches supplémentaires sont encore nécessaires avant que l’utilisation de la stimulation cérébrale pour traiter la dépression chez les personnes atteintes de sclérose en plaques (SEP) devienne une pratique répandue.
Cette technique pourrait être utile pour traiter la dépression liée à la SEP, mais des études supplémentaires sont encore nécessaires pour bien comprendre son efficacité.
La dépression est généralement reliée à un vaste réseau de connexions de neurones dans le cerveau et ne peut donc pas être isolée dans une région du cerveau particulière.
La communauté médicale suggère d’explorer la stimulation magnétique transcrânienne comme une option de traitement alternative pour lutter contre la dépression induite par la SEP.
Betting on single sports looks like a great solution for a beginner. Such disciplines are easier to predict, so bookmakers take many bets on tennis matches. There are many benefits to make tennis betting. If we consider the top tournaments, then players can always get detailed information about the current shape of their opponents. As a result, it becomes easier to get an accurate idea of how the next match might end.
How to bet on tennis? To do this, you need to carefully monitor the current form of athletes. If we are talking about a long tournament, then it will constantly change. Having reached the peak, the form begins to move into the peak stage. In most cases, the cycle lasts up to 4 weeks. Even if we are talking about top athletes, their form will still not be unchanged. Therefore, it is important to make betting tennis rational, and not give preference to a personal favorite. If women’s tennis is chosen for betting, then the athlete’s menstruation calendar should be considered here. Such calendars can even be found on thematic sites, but their accuracy leaves many questions.
Tennis betting rules
Tennis betting tips allow you to increase your chances that the next bet will bring a solid jackpot. During a match between tennis players, comebacks are an important part of the gameplay. The best tennis bets are made considering this factor. It can both positively and negatively affect the bet. The most phenomenal comebacks usually happen in women’s tournaments. If tennis handicap betting takes place in clay tournaments, then the likelihood of comebacks also increases. There are numerous popular tournaments: ● ATP ● Grand Slam Cup; ● Wimbledon. Betting odds tennis will be possible throughout the year, so the player will have plenty of opportunities to practice. If he is taking his first steps in tennis betting, then the best solution would be to set a small bet amount. The tennis betting rules should be studied in detail before you start playing. The conclusions should be based on arguments drawn personally, and not taken from other people’s forecasts. The tennis betting strategy should match the current bankroll size, as well as the frequency of betting. Attention to pre-match preparation is always rewarded.
Multiple sclerosis (MS) is a neurological disorder that disrupts communication between neurons due to inflammation, which leads to the destruction of the myelin sheaths.
These myelin sheaths are fatty-like layers that serve as protective covers for nerve cells and enable communication between these neurons. As a result of this breakdown in communication, people living with MS may experience depression, anxiety, and other mental health issues.
Neural circuits associated with depression are impacted by lesions caused by multiple sclerosis (MS). A recent study employed a mapping technique to examine if there was a relationship between MS lesions and these circuits.
The researchers found that MS lesions affected the same areas of the brain linked to depression.
For a new study, researchers investigated the link between multiple sclerosis (MS) and symptoms of depression. The data included information on 281 people with MS, including self-reported depression scores, disability levels, and magnetic resonance imaging (MRI) data. The findings provide further evidence of the connection between MS and emotional wellbeing issues such as depression.
Researchers used a technique called lesion network mapping to examine the prevalence of depression among people with multiple sclerosis.
By comparing MRI images of people with MS to a preexisting database of neural connections from 1,000 other individuals, they were able to identify neural circuits linked to depression. Their findings show that participants with MS who had lesions in these particular neural circuits tended to have higher scores on tests assessing depressive symptoms compared to participants with lesions located elsewhere.
Recent studies have highlighted the connection between multiple sclerosis (MS) and depression. It has been found that lesions associated with MS are connected to the same neural pathways as those affected by stroke, transcranial magnetic stimulation (TMS), and deep brain stimulation (DBS). These treatments, which can modify depressive symptoms, provide insight into how depression is linked to MS.
Dr. Barbara Giesser, neurologist and MS specialist at Pacific Neuroscience Institute at Providence Saint John’s Health Center in Santa Monica, California, states that her recent study has found a link between multiple sclerosis (MS) depression and structural brain lesions present in the same locations as those of patients with stroke or head injury-related depression.
This builds upon earlier findings that structural brain damage may contribute to depressive symptoms in people with MS.
People with multiple sclerosis (MS) are especially susceptible to experiencing depression. Depression for those affected by MS is typically due to a combination of structural damage in the brain, any genetic predispositions, and environmental stressors related to their illness. Additionally, certain medications prescribed to treat MS can also result in depressive feelings.
Despite the encouraging research evidence, more investigation is still needed before the use of brain stimulation for addressing depression in those with multiple sclerosis (MS) becomes a widespread practice. This technique might be useful for treating MS-related depression, but further study is still needed to fully understand its efficacy. Depression usually relates to an extensive network of connections within the brain, and thus cannot be singled out to one particular area– hence making it quite difficult to replicate in a clinical setting. As such, he suggests exploring transcranial magnetic stimulation as an alternative treatment option for tackling MS-induced depression.
Brain-derived neurotrophic factor (BDNF) plays an important role in maintaining a healthy mind and body. Discover what exercise can do to increase the production of this important protein, keeping you mentally sharp and strong!
Could just six minutes of high-intensity exercise lead to improvements in your brain? Recent research suggests it can!
Studies have found that even short bursts of intense physical activity can increase BDNF (brain-derived neurotrophic factor) levels.
BDNF is a protein that helps keep neurons healthy and plays an important role in forming memories, learning new things, and regulating moods.
It also plays a role in the progression of neurodegenerative diseases such as Alzheimer’s disease.
Travis Gibbons from the University of Otago, New Zealand, says BDNF has shown great promise in animal models, but pharmaceutical interventions have so far failed to fully exploit it. security its protective power in humans.
In this study, 12 physically active volunteers were put through three tests to see which was better at generating BDNF in the brain: 20 hours of fasting, 90 minutes of medium-intensity cycling, or 6 minutes of intense cycling.
If you’re looking to increase your production of brain-derived neurotrophic factor (BDNF), a study has found that intense, short cycling sessions yield the best results.
After completing a 15-minute biking session with sprints, the participants in the study saw their BDNF levels jump by four to five times what they were after a light exercise.
How can exercise boost BDNF?
The next question is to know the mechanism of action.
Exercise is thought to increase levels of Brain-Derived Neurotrophic Factor (BDNF), which is a protein that helps to maintain and promote the growth of certain neurons in the brain.
Studies have shown that there is a peak in BDNF concentration after intense exercise, which could be due to the natural increase in blood platelets associated with exercise, as they store high levels of BDNF.
The research team is now keen to perform more experiments, such as adding three days of fasting, to see how this affects blood BDNF levels. The combined effects of fasting and intense exercise are another potential avenue to explore.
Exercise has been widely recognized to promote mental health and cognitive functioning, and now new findings suggest that it may be linked to increased levels of brain-derived neurotrophic factor (BDNF).
Research conducted at the University of Otago found that intense physical activity can lead to an increase in BDNF levels. While exercise is widely accessible and inexpensive, this latest study provides another incentive for people to get moving!
Atkinson and Shiffrin’s 1968 model of memory outlines that memory consists of three distinct forms: sensory memory, short-term memory and long-term memory. Sensory memory is the brief storage of information from our senses – sight, sound, touch, etc. Short-term or working memory stores limited amounts of information for a short time, while long-term memory is the repository for any information that needs to be remembered over a long period of time.
Sensory memory
Sensory memory refers to the ability of our senses to remember small amounts of information almost instantaneously. This type of memory, sometimes referred to as iconic or echoic memory, was first proposed by psychologists in his 1968 model, but was later added into their research.
This information therefore stores in our sensory memory which retains it for a very short period of time.
Duration: ¼ to ½ second
Short-term memory
Short-term memory (STM), as proposed by the Atkinson-Shiffrin model, is the second stage of memory.
It is a short-term storage system in which information that has been acquired through physical or emotional stimuli is temporarily held and can then be used for specific tasks or stored in long-term memory.
STM duration seems to be between 15 and 30 seconds and capacity around 7 items.
The magic number 7 (plus or minus two) provides evidence of short-term memory capacity. Most adults can store between 5 and 9 items in their short-term memory.
Long-term memory
Long-term memory is the capacity for humans to store information over extended periods of time. It is a component of the Atkinson-Shiffrin memory model which describes how memories are encoded, stored and recalled.
Long-term memory allows us to retain information and skills for an indefinite period of time and form meaningful connections between different concepts that can help with understanding complex topics better.
Theoretically, the capacity of long-term memory could be unlimited, with the main constraint to recall being accessibility rather than availability.
The duration can be a few minutes or a lifetime. The suggested coding modes are semantic (meaning) and visual (pictorial) but can also be acoustic.
Six minutes d’exercice de haute intensité suffisent pour produire le BDNF, une protéine clé du cerveau. Cette protéine est importante dans la formation, le fonctionnement et la mémoire du cerveau.
Elle joue également un rôle dans la progression de maladies neurodégénératives telles que la maladie d’Alzheimer.
La protéine spécialisée en question est appelée facteur neurotrophique dérivé du cerveau (BDNF), et elle favorise à la fois la croissance et la survie des cellules neuronales dans le cerveau, ainsi que le développement de nouveaux liens et voies de signalisation.
Le physiologiste Travis Gibbons de l’Université d’Otago (Nouvelle-Zélande), affirme que le BDNF s’est révélé très prometteur sur des modèles animaux, mais que les interventions pharmaceutiques n’ont jusqu’à présent pas réussi à exploiter en toute sécurité son pouvoir protecteur chez l’homme.
« Nous avons vu la nécessité d’examiner des moyens non pharmacologiques de maintenir la capacité du cerveau à augmenter naturellement le BDNF pour aider à vieillir en bonne santé. »
Dans cette étude, 12 volontaires physiquement actifs ont été soumis à trois tests pour voir lequel était le meilleur pour générer du BDNF dans le cerveau: 20 heures de jeûne, 90 minutes de vélo d’intensité moyenne ou 6 minutes intenses de vélo.
Une séance brève, mais intense de vélo a donné les meilleurs résultats en termes de production de BDNF. Les niveaux sanguins de BDNF ont augmenté de quatre ou cinq fois, par rapport à un exercice léger.
La question suivante est de connaître le mécanisme d’action. Un moyen pratique de garder le cerveau en bonne santé et de le protéger contre la maladie pourrait être obtenu avec un exercice de haute intensité.
Il est possible que l’augmentation des plaquettes sanguines qui se produit naturellement avec l’exercice explique ces résultats. Les plaquettes stockent une grande quantité de BDNF, ce qui pourrait expliquer le pic qui coïncide après un exercice intense.
L’équipe de chercheurs est maintenant désireuse de réaliser plus d’expériences, tel par exemple, ajouter trois jours entiers de jeûne, pour voir comment cela affecte les niveaux de BDNF dans le sang. Les effets combinés du jeûne et de l’exercice intense sont une autre avenue potentielle à explorer.
Nous avons maintenant de nombreuses études reliant l’exercice avec des avantages qui peuvent être observés dans le cerveau, qu’il s’agisse d’améliorer la concentration ou d’améliorer la fonction cognitive. Il est probable qu’il y ait de nombreuses autres découvertes à venir.
« Il devient de plus en plus clair que l’exercice profite à la santé du cerveau à tous les stades de la vie », explique Kate Thomas, physiologiste et auteur de l’étude à l’Université d’Otago.
« Ces données montrent une avenue par laquelle l’exercice intense peut jouer un rôle. Heureusement, l’exercice est largement accessible et abordable.
Several diseases can cause numbness in the hands. Numbness, weakness, and painful tingling may also happen when a person’s hands feel numb.
The following are some of the possible causes of numbness in a person’s hands, accompanying symptoms, and some treatment options:
Cardiovascular disorders
Following cardiovascular diseases may cause numbness in the hands.
Heart attack
A heart attack can cause tingling and numbness in one hand.
If a person has a suspected heart attack, they or someone close to them should seek emergency medical help.
Blockage of blood flow to the heart can cause chest pain as well as tingling and numbness in one arm or the other.
Symptoms
Other symptoms may include:
nausea
sweat
shortness of breath
dizziness
tingling and numbness on either side of the body
shoulder pain
unexplained tiredness
Treatment
Treatment includes admission to a hospital, where a specialist can diagnose and possibly reopen the blocked heart artery.
Stroke
An interruption in blood flow to the brain — potentially due to a blood clot or a ruptured artery causing bleeding in the brain — can lead to a stroke.
Symptoms
Symptoms may include:
sudden weakness or numbness on one side of the body
confusion
difficulty maintaining balance
visual problems
speech problems
Treatment
If a person has a suspected stroke, they or someone close to them should seek emergency medical attention, which may involve the administration of anti-clot medications.
Vascular disorders
The following vascular conditions can cause numbness in the hands.
Vasculitis
Vasculitis is a condition in which the immune system attacks and causes blood vessels to become inflamed.
Symptoms
The symptoms vary depending on the area of the body affected by vasculitis.
Some symptoms may include:
fatigue
fever
weightloss
night sweats
eruption
nerve problems, such as numbness or weakness
Treatment
Treatment depends on the underlying cause of the vasculitis and may include steroids or other immunosuppressive drugs.
Raynaud’s disease
Raynaud’s disease causes temporary narrowing of the arteries that direct blood to the fingers and toes.
Symptoms
Symptoms may include numbness, tingling, or burning sensation in the fingers, as well as a change in appearance of the fingers and toes becoming pale blue or white.
Treatment
Learning to avoid common triggers of illness — such as cold, stress, and certain medications — can help relieve symptoms.
Neurological disorders
The following neurological disorders can cause numbness in the hands.
Brachial plexus injury
The brachial plexus is a complex network of nerves that stretch from the spine to each shoulder. This network transmits signals between the spine and the shoulders, arms and hands.
Shoulder injuries, tumors, and other causes of inflammation can all lead to brachial plexus injury, which can lead to numbness in a person’s hand.
Symptoms
Symptoms may include:
severe shoulder or arm pain
numbness in the hands
weakness and difficulty moving the arms
Treatment
Treatment depends on the underlying cause.
Some people can recover without further intervention, while others may require surgery or physical therapy.
Fibromyalgia
This condition affects nerve function and causes chronic pain, which can lead to tingling and numbness that may closely resemble that of carpal tunnel syndrome.
Symptoms
Other symptoms may include:
pain in multiple areas of the body, which may include the hands
fatigue
headache
difficulty sleeping
depression
stomach problems
Treatment
Treatment options for fibromyalgia include physical activity, as it can help relieve pain and improve sleep. A doctor may also prescribe antidepressant or anticonvulsant treatment.
Cognitive-behavioral therapy may be beneficial for those whose condition does not respond sufficiently to medication.
Spinal cord injury
Trauma from spinal cord injury can lead to tingling and numbness in the hands and feet. Falls, traffic accidents, blows to the head, gunshot wounds, and several other events can all cause spinal cord injuries.
Symptoms
Symptoms can vary depending on the exact area of the body affected by the injury. They may include:
movement affected
loss of sensation
loss of large bowel and bladder control
pain
Treatment
Treatments include supportive therapy and surgery when possible.
Some experimental treatments may give people with spinal cord injury a better chance of regaining function.
Cubital Tunnel Syndrome
This disease results from excessive stretching or pressure on the ulnar nerve.
Symptoms
Symptoms, particularly in the ring and little finger, may include:
numbness
weakness
tingling
Treatment
Treatment may include wearing a splint while sleeping to prevent the elbow from bending. Physical therapy, NSAIDs , and surgery to remove or repair any areas of excessive pressure on the elbow may also be potential treatment options.
Musculoskeletal disorders
The following musculoskeletal conditions can cause hand numbness.
Cervical spondylosis
Cervical spondylosis is also known as osteoarthritis of the neck. This disease occurs when degeneration affects the discs or joints of the neck.
Carpal tunnel syndrome
Carpal tunnel syndrome affects about 1% of people of working age. It occurs when one of the nerves running through the carpal tunnel in the wrist is compressed.
Symptoms
Hand symptoms may include:
pain
tingling
weakness
affected grip strength
Treatment
Wearing a splint and resting the wrist and hand can help. Sometimes a doctor may also recommend surgery to reduce pressure on the carpal tunnel.
Ganglion cyst
Ganglion cysts are soft bumps that develop in joints around the body. They can cause pain or numbness in the hand.
According to an article in the Journal of the Canadian Chiropractic Association , up to 70% of ganglion cysts occur in the wrist.
Symptoms
Symptoms can include a round or oval-shaped bump on the wrist or other parts of the body, as well as pain in and around the area.
Treatment
Resting the affected area can help. However, wearing a splint or brace for too long can weaken the muscles in the hand.
Although surgery may be an option for some, these methods may not be completely effective.
According to a review in the Journal of Hand Surgery, researchers predict the risk of a cyst returning after surgery at 21%.
12. Lateral epicondylitis
Lateral epicondylitis, or tennis elbow, occurs when the tendons that connect the muscles on the sides of the forearm and the bone near the elbow become inflamed.
Symptoms
Symptoms may include:
pain or burning sensation, often on the outside of the elbow;
weak grip strength;
tingling and numbness in the hand.
Treatment
Most episodes of tennis elbow will resolve with rest, physical therapy, and NSAIDs. However, in severe cases, a doctor may recommend surgery.
Autoimmune diseases
The following autoimmune diseases can cause numbness in the hands.
Guillain-Barré Syndrome
This disease can cause the body’s immune system to attack nerves outside the brain and spinal cord. This can lead to muscle weakness.
Symptoms
Other symptoms may include:
feeling of having needles in the hands and feet
imbalance
visual problems
difficulty swallowing
severe pain that gets worse at night
muscle paralysis
Treatment
Although there is currently no cure for Guillain-Barré syndrome, a doctor can treat the condition using immunoglobulin therapy or plasma exchange, also known as plasmapheresis.
These treatments can reduce the body’s immune system response.
Multiple Sclerosis
Multiple sclerosis is a disease that attacks the central nervous system (CNS). The immune system attacks the protective covering of the nerve sheaths, which can eventually destroy the CNS nerves.
Symptoms
Symptoms may include:
numbness and weakness of limbs
electric shock sensations
tremors
unsteady gait
affected vision
cognitive difficulties
Treatment
Treatment includes taking immunosuppressive drugs such as corticosteroids and other disease-modifying therapies.
Later, doctors may also recommend plasmapheresis to reduce the immune system response.
Sjogren’s Syndrome
Sjögren’s syndrome is an autoimmune disease that mainly attacks the glands that produce tears and saliva.
Some people may also experience tissue or organ damage in other areas of the body.
Symptoms
Other symptoms may include:
dry eyes
dry mouth
itchy skin
a chronic cough
numbness and tingling in the hands and feet
severe fatigue
Treatment
Treatment depends on the symptoms and the area of the body affected by the disease.
For example, a doctor may choose to prescribe eye drops, drugs to increase saliva, NSAIDs, or drugs to suppress the immune system.
Other diseases
The following diseases can also cause numbness in the hands.
Diabetes
The most well-known types of diabetes include:
Type 1 : This type of diabetes develops when the body does not produce insulin.
Type 2 : This type of diabetes occurs when the body does not respond properly to insulin and ultimately does not produce enough.
Gestational diabetes : This form of diabetes occurs during pregnancy. It will usually disappear after delivery.
Symptoms
Symptoms may include:
a slow and gradual onset of tingling and numbness in the feet and hands
extreme sensitivity to touch or temperature changes
burning or shooting pains in the hands and feet
Treatment
Making certain lifestyle changes, such as eating a healthy diet and exercising regularly, can help a person maintain stable blood sugar levels.
People with type 1 diabetes may need to inject insulin. Type 2 diabetes and gestational diabetes can be controlled by diet or by beginning treatment with non-insulin medications.
Vitamin B-12 deficiency
A study published in the journal RMJ found that 90% of 110 people with vitamin B-12 deficiency reported numbness and loss of sensation as symptoms.
Symptoms
Other symptoms may include:
numbness and tingling in the hands, feet, and legs
difficulty walking
an inflamed and swollen tongue
difficulty thinking clearly
muscular weakness
fatigue
Treatment
A doctor can prescribe vitamin B-12 supplementation in pill or vaccine form.
Amyloidosis
Amyloidosis is a medical condition that causes an abnormal buildup of amyloid protein in healthy tissue, which can affect the function of the affected area.
19. Lyme Disease
A tick bite carrying the bacteria Borrelia burgdorferi can cause Lyme disease . It is an infectious disease that affects the nervous system.
Symptoms
Symptoms of Lyme disease can closely resemble those of the flu, such as fever, chills, fatigue, and joint pain.
If a person does not receive treatment, they may experience:
joint swelling
an irregular heartbeat
nerve pain
shortness of breath
pain or numbness in the hands and feet
Treatment
Treatment depends on the stage Lyme disease has reached.
Doctors can treat Lyme disease at an early stage with antibiotic therapy. Later-stage Lyme disease may require antibiotics and supportive treatments.
Medication Side Effects
Taking certain medications, such as chemotherapy drugs, can cause tingling and numbness in the hands.
Treatment
Some people may experience an improvement in symptoms when they stop taking the drugs. However, others may experience permanent tingling and numbness.
Chronic traumatic encephalopathy is a type of brain disease that is likely caused by repeated head trauma. It is diagnosed only during the autopsy by studying the brain.
The disease of chronic traumatized encephalopathy (CTE) is not well understood. It is not related to the immediate consequences of a late episode of head trauma.
Researchers are still investigating how repeated head injuries, including the number of head injuries and the severity of those injuries, and other factors contribute to changes in the brain that lead to CTE.
People who played football and other contact sports, including boxing, have been observed to have chronic traumatic encephalopathy. It can also occur in military personnel who have been exposed to explosions.
CTE is thought to include impaired cognition and emotion, physical problems, and other behaviors. These are thought to develop years to decades after a head injury.
Except in the few people at high risk, chronic traumatic encephalopathy cannot be diagnosed throughout life. Researchers do not yet know its frequency in the population and do not understand the causes. There is currently no cure.
Symptoms of chronic traumatic encephalopathy
No specific symptoms have been clearly linked to chronic traumatic encephalopathy. Some possible signs and symptoms can occur in many other conditions. There were cognitive, behavioral, mood, and motor changes in the few people diagnosed with encephalopathy.
Cognitive deficit
Difficulty thinking (cognitive disorders)
Memory loss
Problems planning, organizing and performing tasks (executive function)
Behavioral changes
Impulsive behavior
Assault
Mood disorders
Depression or apathy
emotional instability
Substance abuse
Suicidal thoughts or behaviors
Motor symptoms
Parkinsonism
Motor neuron disease
Researchers believe that symptoms can develop over years or decades after repeated head trauma, even though they don’t develop immediately. Symptoms of encephalopathy appear in two forms. Early in life, between the late 20s and early 30s, the first form of can cause mental health and behavioral problems, including depression, anxiety, impulsiveness, and aggression. The second form is thought to cause symptoms later in life, around age 60. These symptoms include memory and thinking problems that can progress to dementia.
Causes of chronic traumatic encephalopathy
Repetitive head trauma is likely the cause of CTE. Football and ice hockey players or boxers, as well as military personnel serving in war zones, have been the focus of most studies.
However, not all athletes and those who experience repeated concussions, including military personnel, develop chronic traumatic encephalopathy. Some studies have shown no increased incidence of encephalopathy in people exposed to repeated head trauma.Some studies question the hypothesis of a link between chronic traumatic encephalopathy and repeated head trauma.
The media have widely reported that chronic traumatic encephalopathy is a neurodegenerative disease often affecting retired athletes who have practiced contact sports (American football or boxing, for example).
An epidemiological study casts doubt on this observation. The previous results of this association would be due to the fact that these athletes have a longer life expectancy and therefore an increased risk of Alzheimer’s disease. Source: Hippocampal Sclerosis in Dementia, Epilepsy, and Ischemic Injury. Journal of Neuropathology & Experimental Neurology, 2014; 73 (2): 136.
In the brains of sufferers, the researchers discovered that there was an accumulation of a protein called tau around the blood vessels. Chronic traumatized encephalopathy is thought to cause certain areas of the brain to atrophy.
People with CTE may show signs of another neurodegenerative disease, including Alzheimer’s disease, amyotrophic lateral sclerosis (ALS) – also known as Lou Gehrig’s disease – Parkinson’s disease or frontotemporal dementia.
Risk factors
Repeated exposure to traumatic brain injury is thought to increase the risk of CTE.
Prevention
There is no cure for chronic traumatized encephalopathy, but the current recommendation is to reduce mild traumatic brain injury and prevent further injury after a concussion.
Diagnosis of chronic traumatic encephalopathy
There is currently no way to diagnose CTE. It can only be suspected in people at high risk due to repeated head trauma over the years. A diagnosis requires evidence of brain tissue degeneration and deposits of tau and other proteins in the brain that can only be seen at autopsy.
PET
A positron emission tomography (PET) scan uses a radioactive tracer that is injected into a vein. Then, a scanner tracks the flow of the tracer through the brain and targets the buildup of tau.
