What causes clumped fur and yellow skin lesions on my indoor cat?
Updated on September 23rd, 2025
Pet's info: Cat | Bombay | Female | spayed | 1 year and 6 months old | 8 lbs
I have a short haired Bombay and yesterday I noticed a small patch of her fur was clumped up. It has the look or a Matt but it isn't. She also have a small skin lesion that is yellow in color. She is an indoor cat and has had not change in diet or anything else.
This is probably caused by an allergic reaction. first of all make sure you de-flea Nuggey regularly every month with a high quality spot on (ex. Advantage) as fleas are by far the most common reason for these reactions. If the fleas are not the problem, it could be an allergic reaction to food or an environmental factor. this is more complicated to treat and will sometimes require medications such as Steroids, anti histamines or cyclosporin in order to stop the allergy.