(In light of all the issues related to diagnoses, this is psychology humor)
Nicholas and Beverly Serna's daughter Caitlin was only four years old, but they already knew there was a problem.
Day after day, upon arriving home from preschool, Caitlin would retreat into a bizarre fantasy world. Sometimes, she would pretend to be people and things she was not. Other times, without warning, she would burst into nonsensical song. Some days she would run directionless through the backyard of the Sernas' comfortable Redlands home, laughing and shrieking as she chased imaginary objects.
When months of sessions with a local psychologist failed to yield an answer, Nicholas and Beverly took Caitlin to a prominent Los Angeles pediatric neurologist for more exhaustive testing. Finally, on Sept. 11, the Sernas received the heartbreaking news: Caitlin was among a growing legion of U.S. children suffering from Youthful Tendency Disorder.
"As horrible as the diagnosis was, it was a relief to finally know," said Beverly. "At least we knew we weren't bad parents. We simply had a child who was born with a medical disorder."
Youthful Tendency Disorder (YTD), a poorly understood neurological condition that afflicts an estimated 20 million U.S. children, is characterized by a variety of senseless, unproductive physical and mental exercises, often lasting hours at a time. In the thrall of YTD, sufferers run, jump, climb, twirl, shout, dance, do cartwheels, and enter unreal, unexplainable states of "make-believe."
The rest of the article is here.