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ALS is a condition that affects nerve cells, leading to eventual loss of control over muscle function. Symptoms include muscle twitches, cramps or weakness.

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This article will review the symptoms, causes, and management of acute disseminated encephalomyelitis. Symptoms of the preceding illness include headache, fever, nausea, vomiting, or altered mental status, followed by the condition-specific symptoms of difficulty controlling limbs or eyes, trouble swallowing, speaking, or urinating, vision loss, spastic movements of the limbs, seizures, bleeding in the brain, as well as possible depression and psychosis.

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Aseptic meningitis is a specific type of meningitis that refers to inflammation of the brain and spinal cord caused by something other than a bacterial infection, most commonly, a viral infection.

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Bacterial meningitis is inflammation of the membrane surrounding the brain and spinal cord due to an infection. Symptoms can escalate quickly and include fever, headache, neck stiffness, nausea and vomiting, confusion, and sensitivity to light and is considered a medical emergency.

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This article will review the symptoms, causes, diagnosis, and treatment of the condition Bell’s palsy. The main symptom of this condition is paralysis of facial muscles.

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A brain abscess is a serious infection that causes your brain to swell. It's caused by bacteria getting into your brain, usually from intravenous drug use, recent brain or heart surgery, or chronic sinus infections. A brain abscess can cause many different symptoms, including headaches, fever, speech problems, nausea and vomiting, and even seizures. If you don’t treat it early, it can also cause serious neurological damage.

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Brain tumors are a growth of abnormal cells that develop from brain tissue, from within the brain lining, or migrate from another area of your body. Not all brain tumors are cancerous. Prompt diagnosis can determine effective treatment.

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Diabetic neuropathy is nerve damage caused by longstanding or poorly controlled diabetes and other conditions. Symptoms include a loss of sensation, weakness, pain, nausea, and more. Learn which symptoms can be treated.

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This article will review the symptoms, causes, management, and prevention of exertion headaches. Exertion headaches occur during or after strenuous physical activity and other activities that increase abdominal pressure, such as sports, sneezing, or intercourse.

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Guillain-Barre syndrome is a condition in which the body's immune system damages parts of neurons. Symptoms include progressive weakness, numbness or tingling, decreased reflexes, body aches, double vision, loss of balance, and other serious symptoms.

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Sex headaches are caused by sexual activity and feel like a dull ache in your head and neck that builds up as sexual excitement increases; they are mostly harmless.

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Dementia is most commonly caused by Alzheimer’s disease. If a parent has Alzheimer’s, you have a higher than average risk. But it doesn’t mean you’ll get it.

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Migraines are throbbing headaches that are often accompanied by nausea, fatigue, and sensitivity to light and noise. They tend to recur. There are treatments available to try to reduce the frequency and severity of migraines.

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Mitochondrial myopathies are a group of neuromuscular diseases caused by damage to the mitochondria. Symptoms include exercise intolerance and muscle weakness.

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This article will review the symptoms, causes, and management of periodic limb movement disorder. Symptoms include unintentional movements of the lower limbs early in sleep that may disturb you or your bedmate, may be repetitive or vary in severity, and may result in reduced sleep quality and daytime fatigue.

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Peroneal nerve injury is a progressive injury that affects the peroneal nerve, a nerve running along the side of your leg. It can be injured in an accident or a knee dislocation, but can also from wearing high heels.

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A pinched nerve means that something is putting pressure on a nerve, causing pain, numbness, or loss of function. Pinched nerves can occur anywhere in your body from your back to your legs to your wrists.

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Post-concussion syndrome occurs after a concussion from a traumatic blow to the head. After the main symptoms of a concussion fade, people are left with lingering symptoms for months or years.

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Pseudotumor cerebri is a condition that occurs when pressure inside the skull increases for no reason. Symptoms mimic a brain tumor, but no tumor is present.

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When blood stops flowing to the brain because of a clot or rupture (hemorrhage), it’s called a stroke. This is extremely dangerous because blood carries essential oxygen and nutrients to the brain. Learn about the three types of strokes and why you need to get to the ER as fast as possible.

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A subarachnoid hemorrhage is characterized by a leakage of blood into the space between the first and second membranes surrounding the brain.

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A tension headache feels like pressure pain around your head as opposed to headache pain in one spot. How to diagnose a tension headache and avoid them in the future.

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Vasovagal syncope is sudden fainting caused by a drop in heart rate and blood pressure when your body overreacts to certain emotional or neurologic triggers.

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Abdominal migraines cause abdominal pain, headache, nausea, and vomiting—mostly in children. Lifestyle changes reduce symptoms.

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Alzheimer’s disease is the most common type of dementia. It is caused by a buildup of proteins in the brain. This leads to problems with memory, comprehension, and attention. There is no cure, but treatment options can help slow its progression.

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Find out how to treat benign paroxysmal positional vertigo

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A brain aneurysm is a bulge in the wall of a blood vessel in the brain. Most of the time it has no symptoms at all, but if it bursts, it creates a terrible headache. Left untreated, a ruptured aneurysm can be deadly. Here are the warning signs to look out for.

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Find out how to treat your cluster headache

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Frontotemporal dementia damages the lobes of the brain responsible for language, voluntary movement, high-level cognitive skills, and more. This causes a decline and deterioration of these important functions.

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Headaches are very common and can usually be treated with over-the-counter pain relievers. But some types of headaches, like migraines, can be extremely painful and need to be treated by your doctor, and others may require emergency treatment.

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If your face muscles are spasming, you may have injured a facial nerve. Hemifacial spasm is not dangerous but it can be distressing.

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Find out how to treat and prevent your hypnic headache

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Find out how to treat your motion sickness

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Nerve damage can be caused by many types of injuries, ranging from a bruise to trauma from a car accident. While symptoms of mild nerve damage may go away on their own, severe cases need to be treated by your doctor or a surgeon.

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Parkinson’s disease is a degenerative nervous system disease. It kills certain brain cells, affecting movement. Symptoms include tremors, problems with dexterity, a shuffling walk. There is no cure, but treatments help.

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It’s not unusual to feel a little dizzy when you stand up after sitting or lying down. But if it happens frequently, it may be a sign of POTS, a type of low blood pressure.

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A concussion is a mild brain injury that causes symptoms such as headaches, confusion, and amnesia. Symptoms are usually temporary and go away with rest.

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A transient ischemic attack (TIA) is sometimes called a mini-stroke. It is actually your body warning you that you are at risk for a stroke. Unlike a stroke, it is not long-lasting.

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Vascular dementia is a deterioration in cognitive function caused by brain damage from impaired blood flow to the brain. You can develop vascular dementia after multiple mini strokes.

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