The part about doing things, or something bad might happen, that IS a trait of OCD. OCD can often kick in around the time of puberty too. Does he have rituals that he does, so that "bad things" don't happen?
calicorose38938.7233796296Welcome. Any antidepressant (like Strattera) can cause a paradoxical reaction like increased anxiety with OCD tendancies. If your son is not already seeing a child psychiatrist, I'd strongly recommend finding one who can evaluate your son's symptoms and take a good hard look at the meds. His symptoms warrant this kind of care. Good luck.