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 ...

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 ...

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 ...