I have high functioning autism in addition to OCD and PTSD. Am currently taking Lamictal, Geodon, Inderal, and Xanax. Not sure what's doing what but it seems to work to an extent. For OCD exposure therapy helped, in my case I repressed my early childhood trauma and had exposure therapy for OCD before I was diagnosed with PTSD, PTSD hit later. Though exposure therapy is better for obsessive behaviors versus obsessive thoughts, at the time I had it I was washing my hands so much they became chapped. Currently I go to therapy at a PTSD center, we just talk about the trauma and it helps somewhat but not as much as I'd like it to.