My 8-9 year old male Basset Hound has developed a severe skin problem that is mostly on his entire underside. He smells, his skin is red, he wants to lick himself all the time. Vet gave me a bar soap to use, but I bought shampoo for seborrhea which seemed to give him some relief at first and I changed his kibble to one for sensitive skin. He is also developing lumps under the skin of his belly. He has been wearing a Jafco muzzle to stop the licking. We have been bathing him for two months now (every 3 days), but he doesn't seem to be improving. Any suggestions? Is there a cure? I live in Guatemala.