Overview A migraine headache is a throbbing or pulsating headache that is often one sided (unilateral) and associated with nausea; vomiting; sensitivity to light, sound,...

Multiple sclerosis (abbreviated MS, also known as disseminated sclerosis orencephalomyelitis disseminata) is an autoimmune condition in which the immune system attacks the central nervous system, leading...

Muscular dystrophy (MD) is a genetic disorder that weakens the muscles that help the body move. People with MD have incorrect or missing information in...

Myalgia means “muscle pain” and is a symptom of many diseases and disorders. The most common causes are the overuse or over-stretching of a muscle or...