Photo sensitivity

I bought a four-year-old paint gelding this winter and took him immediately to a professional trainer. When I went by the barn yesterday the trainer pointed out how his muzzle and the white on his neck was blistered and scabby but healing ...I bought a four-year-old paint gelding this winter and took him immediately to a professional trainer. When I went by the barn yesterday the trainer pointed out how his muzzle and the white on his neck was blistered and scabby but healing ...

Story originally posted by: Michael Lowder, DVM, MS

I bought a four-year-old paint gelding this winter and took him immediately to a professional trainer. When I went by the barn yesterday the trainer pointed out how his muzzle and the white on his neck was blistered and scabby but healing up. The trainer said he had to put the horse back in the barn because he was allergic to the sun and that he had photo synthesis. He also said this was not uncommon.

My question is, "Will the horse grow out of this?". I asked the breeder I bought him from and she said there had never been a problem before and that the horse had always been outside. I do not know if I want to put a lot of money into a horse that is allergic to the sun. The trainer says he is really a good athlete and will make a good show horse. The trainer is highly reputable and I trust his opinion but felt that another view on the subject was appropriate. I have never heard of this type of problem before and would appreciate any information you might have on the subject.

Thank You for any help

Bob Walsh

Dear Bob:

Your horse will not outgrow this condition. You may try putting on some baby sunscreen lotion.

Thanks,
Dr. Lowder