(Oh - and btw, did you ever read the book Brainlock by Schwartz? Great and insightful book about OCD. I know a lot about it because two of my children have it. It appears to be due to a glitch in the basal ganglia. In some rare cases, antibodies to strep infections, or Lyme disease, seem to be the trigger. 5-htp is a natural amino acid supplement that is sometimes helpful. )