Alien Hand Syndrome
It is a disease in which there is involuntary movement of limbs. But, mostly movement of hand is involved. Strokes, Brain disorders and other neurodegenerative disorders are also responsible for this disease. This disease is makes the control of limbs involuntary means they move as they are not in control.
Persistent Genital Arousal Syndrome
It is a bizarre disease in which uncontainable, consistent and involuntary arousal in the genitals. In this without having an actual intercourse a women can have an hour or up to 100 orgasms a day. It affects both men and women and can be experienced by simply touching of clothes in the genital regions or like driving etc.