Brain and Nervous System Medical Reference

Talking is something we often take for granted. But what if you suddenly can't get the words out or can't say them in your usual way? Find out what could be causing your sudden speech problems and what you can do about it.

When you hear a word, do you see a color or taste a food? You may have the condition, synesthesia, You perceive one sense through another of your senses.

Empty sella syndrome affects the pituitary gland but may not cause symptoms. Learn more about the condition, including symptoms, diagnosis, and treatment.

If a loved one is suddenly acting confused, you need to get help right away. Learn what causes sudden confusion and how it’s treated.

Learn about cranial ultrasound, which can see inside your baby’s brain.

If you are feeling dizzy constantly, your doctor may perform a Dix-Hallpike Test in order to perform a vertigo diagnosis. Learn more about the examination and what the results mean.

If you’ve been back from a cruise for weeks, but still feel like you’re rocking and swaying, you might have mal de debarquement syndrome. Learn what causes it, what the symptoms are, and how it’s treated.

Everything you think, feel, and do is controlled by your nervous system. Learn how it works and what kinds of things can go wrong.

A landmark 2017 study by Boston University researchers found that the brains of 110 of 111 deceased NFL players they examined showed signs of CTE.

You can get Wernicke-Korsakoff syndrome when you don’t have enough vitamin B1. Learn the causes, symptoms, and treatments for this disease.

Neck pain or an injury can leave you feeling dizzy. This condition, known as bow hunter’s syndrome or rotational vertebral artery syndrome, makes you feel faint or dizzy when you turn your head.

Pseudotumor cerebri feels like a brain tumor, but it isn't. Learn what to do if you have the symptoms.

Does a whisper in your ear or the sight of someone folding towels make your scalp tingle? You might have autonomous sensory meridian response (ASMR).

Learn the causes, symptoms, and treatments for this group of rare diseases that make muscles weak or unable to move.

Powassan is a tick-borne illness that causes swelling in the brain and spinal cord. It used to be rare, but cases could be on the rise.

Thanks to technology, social services and other support, people who have cerebral palsy (CP) have better chances than ever to lead independent, fulfilling lives as adults.

WebMD explains the liquid that protects your brain and what kind of powerful clues it can give your doctor.

The experts at WebMD explain sound therapy, how it works, and whether it might be right for you.

If you're very sensitive to certain everyday sounds, you may have a condition called hyperacusis. WebMD explains what you need to know about this hearing disorder and how to get help.

If you have vertigo or trouble hearing, your body’s balance system might be off kilter.

Sudden memory loss isn't always a sign of Alzheimer's or other types of dementia. Learn what other conditions can affect your memory -- and how to treat them.

The spinning sensation and dizziness you get from vertigo can limit your activities and make you feel sick. Learn some simple maneuvers you can do at home that might bring relief, depending on the cause.

A brain aneurysm is a bulge that forms in the blood vessel of your brain that could lead to severe health issues and possibly death. But most brain aneurysms don’t cause any symptoms, and only a small percentage of them result in health problems.

If you’re dizzy and your ears are ringing, you might have Ménière’s Disease. Learn how it progresses and how you can manage it.

Electronystagmography, or ENG, is a series of tests that can help your doctor figure out the causes of your vertigo. Read about what to expect from an ENG procedure.