[Masturbation in infancy simulating convulsive disorder]

We describe a 7-month-old girl referred for evaluation of a convulsive disorder. The tentative diagnosis of epilepsy was based on what were apparently paroxysmal events which occurred many times during a day. A cousin had suffered from infantile spasms and is mentally retarded. The episodic "attacks" in our patient consisted of sudden rhythmic body movements, crossing of thighs, altered awareness, glassy stare and profuse sweating. While the attacks subsided spontaneously, they could easily be aborted by changing the infant to a sitting position or by picking it up and holding it, when it would revert to completely normal behavior. A detailed history and personal observation of the "attacks" made it clear that they were really physical manifestations of masturbation. The diagnosis of epilepsy was therefore discarded. Awareness of masturbation in infants is essential for establishing the correct diagnosis, and spares infants and families many superfluous investigations and the anxiety associated with a diagnosis of convulsive disorder in children.