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Why is my outdoor cat losing hair all over and having diarrhea?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Female | spayed | 2 years and 5 months old | 6 lbs

I have an outdoor feral 2 yr. old spayed cat who recently started losing her hair. The hair loss is spotty, but involves the whole body. I have added some Biotin to her food, which seemed to help at first, but no longer. She has always had poor digestion resulting in diarhea and slow growth while a kitten. Recently she actually took Pro-Pectalin for 5 days. I was thinking the hair loss was either stress related or due to poor digestion/missing nutrients. Any suggestions?

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1 Answer

Most Helpful Answer

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Answered By C. Rathjens, DVM

Veterinarian

Published on October 26th, 2018

I would be concerned about fleas and allergies foremost, and recommend she be on a high quality flea preventive (seresto collar, revolution topical, bravecto topical are all good, or your vet can recommend one they carry - avoid the pet store for this because there are some sold there over the counter that can actually cause seizures in cats. The seresto collar lasts 8 months, so might be a good option for handling her less, but she may also find a way to get it off). If she's already on a preventative, I'd recommend talking to her vet about testing/treatment for allergies. There are many different ways to approach this and you're going to be significantly limited by her feral status.

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