Myasthenia gravis is a chronic autoimmune neuromuscular disease characterized by varying degrees of weakness of the skeletal (voluntary) muscles of the body. The hallmark of...
Narcissistic Personality Disorder (NPD)
Narcissistic Personality Disorder (NPD) is a personality disorder defined by theDiagnostic and Statistical Manual of Mental Disorders (DSM IV-R), the diagnostic classification system used in the...
Narcolepsy
What Is Narcolepsy? Narcolepsy (NAR-ko-lep-se) is a disorder that causes periods of extreme daytime sleepiness. It also may cause muscle weakness. Rarely, people who have...
Obsessive-Compulsive Disorder
It’s normal, on occasion, to go back and double-check that the iron is unplugged or your car is locked. But in obsessive-compulsive disorder (OCD), obsessive...