I agree with Lara on this one Vicky

My son's OCD was very severe when he was 10-12yo ...now (17yo) it is real mild
(we used to use supplements to help boost serotonin, but dont even need them for him anymore)

My husband is late 50s and also has TS/OCD etc
He has noticed OCDs increasing lately, and has commented that he feels there have been phases throughout his life when they have definitely been higher than others, but they were mild for him as a young person

Whether it is something internal ("genetic",hormonal, biochemical) that cause the waxing of OCD or whether it is environmental (allergen, toxin, illness,etc) or the ubiquitous "stress and/or excitement" or a mix of many things....not sure....but certainly from our experience the increase you are seeing with Scott's OCD is not out of the "norm"

If you are interested, Inositol (one of the B vits) is a safe natural way to boost serotonin and is often effective for OCD. It seems the kind that has added vit B6 is optimal.
If Scott is on any meds (which I think he is, right?) then maybe still check with the doc first on whether Inositol is ok
Inositol Info from the Health Encyclopedia

and info on supplement/drug interactions