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Understanding Myasthenia Gravis -- The Basics

Myasthenia gravis is a chronic condition that causes muscles to tire and weaken easily. If a woman with myasthenia gravis gives birth, the baby may...

Understanding Fainting -- The Basics

Fainting, also called syncope (pronounced SIN-ko-pee), is a sudden, brief loss of consciousness and posture caused by decreased blood flow to the b...

What is ALS? what are The Types and Causes?

Eventually, people with ALS lose control of their diaphragm, the muscles in the chest that help you breathe. The loss of breathing causes many peop...

Transthyretin Familial Amyloid Polyneuropathy

TTR-FAP is a disease that affects your nervous system. TTR-FAP can affect people of almost any age, from their 30s to 50s or even later. Because TT...

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...

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...

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 ...

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...

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...

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...

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...

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...