Imagine trying to play the piano or button a shirt, while one hand does something else, entirely of its own volition. Invisibilia explored this... Karen Byrne's left hand sometimes operates on its own ...

Alien hand syndrome is a rare neurological condition that causes one hand to act on its own free will. Sometimes one leg is affected, though this isn’t as common. With alien hand syndrome, the hand ...

It started as a quiet moment in front of the TV—until her hand turned against her. A 77-year-old woman was relaxing at home when she noticed her left hand slowly, deliberately stroking her own face ...

Jack has a degree in Medical Genetics from the University of Leicester.View full profile Jack has a degree in Medical Genetics from the University of Leicester. Brain and nerve damage is most often ...

You know that saying "the left hand doesn't know what the right is doing"? For people with a strange disorder called alien hand syndrome, that's literally true -- the neuropsychiatric condition makes ...

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 ...

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 ...