Tourette's Syndrome

Tourette's syndrome is a problem with the nervous system that causes people to make sudden movements or sounds, called tics, that they can't contro...

Read more

Thoracic Outlet Syndrome

Thoracic outlet syndrome (TOS) is when you have pain, swelling, or other symptoms from compression in your thoracic outlet -- the opening between y...

Read more

Spinal Muscular Atrophy

Spinal muscular atrophy (SMA) most often affects babies and children and makes it hard for them to use their muscles. Babies with this type of SMA ...

Read more

Restless Legs Syndrome (RLS)

Restless legs syndrome (RLS) is a nervous system disorder that causes an overpowering urge to move your legs. Symptoms almost always go away in the...

Read more

Normal Pressure Hydrocephalus

Normal pressure hydrocephalus (NPH) is a condition that happens when you have too much of a certain kind of fluid in parts of your brain. Normal pr...

Read more

What is Neuromyelitis Optica?

Neuromyelitis optica, or NMO, is a disease that affects your eyes and spinal cord. Doctors aren't sure what causes NMO. It doesn't seem to run in f...

Read more

Multifocal Motor Neuropathy

Multifocal motor neuropathy (MMN) is a disease that affects your body's motor nerves. If you have MMN, you’ll most likely notice the first symptoms...

Read more

Basics of Mad Cow Disease

Mad cow disease, or bovine spongiform encephalopathy (BSE), is a transmissible, slowly progressive, degenerative, and fatal disease affecting the c...

Read more