New Repetitive Behaviors of OCD or Just “Autism”?

“Our 25-year-old son, diagnosed with PDD-NOS, has always had some repetitive behaviors. Lately, though, he’s wanting to redo things such as getting undressed or showering right after he’s done. He’ll insist we backtrack if we drive through the neighborhood a different way because we didn’t go the “right way.” Can you offer guidance on whether these behaviors…