Majid Ali, M.D. New York . 212-873-2444 New Jersey 201-996-0027 What Is Constipation-Diarrhea Behavior Complex? I coined this term Constipation-Diarrhea Behavior Complex (CDB) for a symptom complex which I was able to detect and effectively treat in all my patients on the autism spectrum. The term is self-explanatory but only partly. The core of this specially disturbing symptom complex is