Imagine sitting at home on your couch when one of your hands begins to move of its own accord — and you’re powerless to stop it. That’s what happened to one unidentified 77-year-old woman, whom ...

Alien Hand Syndrome (AHS) is a rare neurological disorder distinguished by involuntary, seemingly purposeful limb movements coupled with a sensation of estrangement from the affected limb. This ...

My friend and Huffington Post Blogger Dave Pruett is a mathematician turned philosopher who writes about the interface between science and what might be termed more mystical or parapsychological ...

A 55-year-old patient who was right-handed consulted a neurologist for episodes of inter-manual conflict due to uncontrolled movements of his left hand, marked by involuntary movements of his left ...

Credit: Getty Images Some rare psychological disorders may occur so infrequently that most mental health professionals might never encounter them. Approximately 1 of every 5 adults in the United ...

Split hand syndrome is a potential sign of amyotrophic lateral sclerosis (ALS). This means that some of the muscles in the hand are weak and thin (atrophied), while others are less affected.