My Dog Keeps Itching Himself Till He Bleeds And Gets All Red And Puffy. What Could Be Causing Him To Itch So Bad. He Has Certain Food We Give Him And Bathe Him Regualrly And He Has No Fleas Or Ticks?

I used to work at a vet hospital, I have seen that many times.  It's an allergy of the skin that may come and go depending on the seasons and weather changes.  Bathing your dog may actually cause more dryness and irritation.  I suggest bathing him less as possible.  Hope that helps! Good luck!