Brain and Nervous System Medical Reference

Neurologists diagnose and treat problems with your brain and nervous system. Find out what to expect at your consultation.

Find out more about the hidden causes of that "pins and needles" feeling.

Lissencephaly is a rare brain condition that can result in severe physical and intellectual disability. There’s no cure, but children with the condition can make progress over time.

Charcot-Marie-Tooth disease, a genetic nerve condition that primarily affects the feet and hands, may have no cure, but it can be managed with physical therapy and attention to care.

If you have pain from an injury that won’t go away, it could be reflex sympathetic dystrophy syndrome. Learn more about this chronic pain condition.

Leukodystrophy refers to a group of diseases that affect the central nervous system. Learn the causes, symptoms, and treatment options.

Ataxia is the loss of muscle control and balance. Learn the types and symptoms of this neurological condition.

Find out more about this serious disease that affects people with weak immune systems.

Syringomyelia is a cyst that grows inside the spinal cord often due to a birth defect or injury. Learn what causes it and how it’s treated.

Learn about neuromyelitis optica, a disease that affects vision and movement.

Learn what causes dysarthria and how it can affect your speech. Also, find out about treatments for this condition.

Basal Ganglia Calcification is very rare.

Got shaky hands? This could be why.

Dizziness: Explore the causes and symptoms of dizziness. Understand when it is crucial to seek medical help and what are some of the effective treatment options.

Find out about canal dehiscence syndrome -- symptoms, causes, and treatment.

Could you or your child have an auditory processing disorder? Learn the basics here plus what to do next.

A nervous system condition called pseudobulbar affect can make crying and laughing uncontrollable. Learn more about the symptoms, causes, diagnosis, treatment, and tips to manage PBA.

Everything you need to know about the JC virus, the germ that causes the rare but deadly brain infection known as PML.

This rare demyelinating disorder comes on suddenly and gets worse fast. But it can be treated, and most kids recover. Find out how it's different from MS.

Find out the differences between epinephrine and norepinephrine, and discover the pros, cons, risks, and benefits, and how it may affect health.

When you have aphantasia, you can't visualize things in your mind. Find out more about this condition and how it affects those who have it.

White matter makes up most of your brain. Aging can cause changes in it that lead to problems with thinking, walking, and balance. Learn how to prevent it.

Learn about the different types of brain injuries. What are their causes, effects, and treatments?

Everything you need to know about Guillain-Barré syndrome, a rare autoimmune disorder.

Chronic traumatic encephalopathy, also known as CTE, is a degenerative brain disease that may affect athletes who have had repeated blows to the head. WebMD explains what happens and how you can protect yourself and your child.

Find out what CIDP is and who is at risk for this neurological condition.

CIPD: Find out which treatments may help you.

CIDP is a rare nervous system disorder that’s hard to diagnose. Find out why.

Learn how CIDP is diagnosed.

WebMD explains the causes and treatment of different types of vertigo, including peripheral vertigo and central vertigo.

The causes, symptoms, and treatment of multifocal motor neuropathy, a rare nerve disease.

Learn the symptoms of Creutzfeldt-Jakob disease, a rare but fatal disease of the brain.

The causes, symptoms, and treatment of upper limb spasticity, which causes stiff, flexed arm muscles.

Learn the details about Tourette syndrome, which causes involuntary movements and sounds.

The causes, symptoms, and treatment of spinal muscular atrophy, an inherited disease that affects a child's ability to move muscles.

Learn about the causes, symptoms, and options for treatment for quadriparesis, also known as tetraparesis, or weakness in all four limbs.

Learn more about hereditary transthyretin amyloidosis (hATTR) with polyneuropathy, learn about the diagnosis, and how to manage the disorder effectively.

Find out what you need to know about foods for your brain, and discover the pros, cons, risks, and benefits, and how they may affect mental health.

What you should know about the progressive brain disorder Huntington's disease, including how it progresses, what to expect, and how to live with it.

WebMD explains the causes, symptoms, and treatment of vertigo, a sensation of spinning that is related to problems with the inner ear.

Chiari malformation is when the lower brain pushes into the skull opening for the spinal cord. Learn about its causes, symptoms, treatments, and more

Learn the causes, symptoms, and treatment of cavernous sinus thrombosis -- a life-threatening blood clot caused by infection.

The brain-eating amoeba is a single-celled organism that usually lurks in warm freshwater bodies like lakes and rivers. If the amoeba enters your body through your nose, it can cause a rare, yet deadly infection in your brain.

What causes memory loss? Learn more from WebMD about various reasons for forgetfulness and how it may be treated.

Have you ever noticed smells that no one else around you can? Your nose isn’t playing tricks on you. You may have a smell disorder called phantosmia.

WebMD discusses what anosmia is and its symptoms, causes, and treatments.

WebMD explains post-concussion syndrome, including causes, symptoms, and treatments.

WebMD explains serotonin syndrome, a potentially fatal condition that is triggered by too much nerve cell activity.

WebMD explains categories of brain disease, including those caused by infection and trauma and those caused by vascular, neurodegenerative, and autoimmune disorders.

WebMD discusses the causes, symptoms, and treatments of acoustic neuroma, a benign tumor in the ear area.