marcia schneider rn wrote: > > Jamie Wallch wrote > > Anyone have any experience with children who chronically pick scabs. Children with Tourettes and Prader Willi syndrome are apt to pick scabs and bug bites. It would be fascinating to know what the neurochemistry behind this behaviour is when they are such diverse conditiions. Why do people bite their nails? It is such an intensely compulsive habit in seemingly very normal people! There is some component of self destruction that defies logic. Anyone with any ideas as to the chemistry behind all this? Uric acid is elevated in a self destructive syndrome the name of which escapes me. -- Anthony Ford-Jones MB BS FRCP Canada Paediatrics Burlington, Ontario, Canada email: