...Unlike older children and adults, this lack of restful sleep _ and resulting oxygen deprivation _ does not produce daytime sleepiness and fatigue in very young kids. It tends to make them hyper.
"Chronic loss of sleep can drive kids crazy, and the less sleep they get, the more crazy they get," said Dr. Brice Kopas, T.J.'s pediatrician. "T.J. was impossible. He just could not sit still, for even a second or two."
But what has been less clear, until recently, is the direct effect of tonsil and adenoid removal on easing, even eliminating, full-fledged ADHD, in children who have sleep problems.
...
In one recent study, at the University of Michigan, 22 children with ADHD and sleep-disordered breathing had adenotonsillectomies. After one year, 11 no longer battled ADHD.
"These improvements are remarkable because hyperactivity and inattention generally are expected to be chronic features in affected school-age children," the researchers wrote in a report published last year in the journal Pediatrics.
http://www.foxnews.com/story/2007/08/14/study-removing-tonsils-may-cure-adhd-in-children/