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Why is my cat losing hair under his armpit and overgrooming?

Updated On September 23rd, 2025

Pet's info: Cat | Turkish Angora | Male | unneutered | 1 year old

What is the cause of my cat's hair loss? The bald area is only on one spot, under his armpit and he over grooms it.

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1 Answer

Most Helpful Answer

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Answered By Sarah Derksen, DVM

Veterinarian

Published on March 19th, 2019

Hi. It is difficult to say from the photo. Hair loss can be caused by infection, allergies, irritants, yeast, ectopic parasites like mites/fleas/etc., and many more. I would recommend getting him seen by your veterinarian, and having them perform skin testing based on mist probable cause

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