Alien hand syndrome (AHS) is when a single limb, usually a hand but sometimes a leg, moves involuntarily. It can signify a serious underlying issue, such as stroke or neurodegenerative disease. Share ...

Add Yahoo as a preferred source to see more of our stories on Google. Alien (left) and elderly woman holding her hand (right) ET, phone 911. Imagine sitting at home on your couch when one of your ...

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 ...