My Cornish Rex is losing his hair along the top of his tail & just recently on each side of his hip & his lower back. We have been to the vets & they have given him Cortisone, & they said its probably an allergy. I can feel little bumps along this area. He is going back to the vets this week, but any ideas on what this is. The strange thing regarding this is the fact that he is not losing the hair due to excessive licking or scratching, we very seldom see him lick these area, only when grooming, they do not appear to hurt him, also we do not have fleas.