#30 Alien Hand Syndrome
Several movies have used plots involving this syndrome, making many people believe its existence to be false.
It is, in fact, a very real disorder that can result in a scary experience for those who suffer from it!
In Alien Hand syndrome, patients experience a loss of control over one of their limbs, which is typically a hand. The hand acts with a mind of its own, almost like an alien, hence getting its name.
It suddenly goes berserk with its action, attempting to choke, scratch, and rip clothes of either the sufferer or individuals around them.
The only way for sufferers to keep this condition under control is by using their other hand to stop the uncontrollable hand or keeping both hands constantly busy with work.