My 7 yr old female has had a 'bald' spot on her elbow for about 10 months. She also has some thinning of her fur on her hind legs that seems to appear seasonally. Our vet did a 'scraping' and she tested negative for mange, ringworm, etc on the bald spot. She was treated with an antibiotic and a topical cream with no improvement. On today's return visit the bald patch is now about 2 inches long and the skin is no longer pink-ish but almost dark red. She does not lick or scratch it - I'm not even sure she could get to it. The vet believes she may have a flea allergy (our cats are all indoors and show no signs of fleas though) and wants me to give her a new flea product called CAPSTAR - every other day for a month. He feels this is the best way to determine if the skin problem is a flea allergy. I advised him that I am reluctant to give her an insecticide every other day for a month if we don't even know that fleas are her problem. Do you know anything about CAPSTAR? Do you have any other ideas about what may be causing her bald patch and treatment options?
Thank-you for your advice.