On Tue, 19 May 1998 21:56:58 -0400 Ford-Jones <> wrote: > 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: Lots of kids on Ritalin also seem to pick at stuff - clothing, skin, scabs (possibly linked to the Tourette association with ADHD?) Steve ---------------------- Stephen Wainer