Alien hand syndrome

Alien Hand Syndrome is a condition where one of your hands seems to move on its own, without you telling it to. It's like your hand has a mind of its own and it moves around in strange ways - like doing things like reaching out and touching things without you wanting it to. It's caused by a medical condition, usually a type of brain injury or tumor, and it can be really scary and confusing for the person who is experiencing it.