I didn't mention before, but yes he was on Benadryl for a number of months throughout the summer and while it initially brought him relief, that stopped with time. I also didn't mention he is 134 pounds and so he had to have 8 of them per day. He is currently on the non-allergenic food (no corn, wheat, etc). but that hasn't helped. I am bathing him three times a week with anti-bacterial shampoo specially for seborrhea, but again, not much help. I may have to resort to the allergy tests and hope something shows up. Thanks again for the advice, I appreciate it and will keep you posted!