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My cat is losing hair in one spot on his back. Why is this happening?

Updated On September 23rd, 2025

My five year old cat Levon started losing hair in just one spot about 6 months ago. I thought maybe he had some kind of fur or skin condition and I started feeding him Salmon Oil supplements. Most of the fur ended up growing back for a while, but then he started losing it again, and now it is worse than before. He is almost completely bald in one spot on his back. I was wondering what could be causing this. I'd like to add that he is a strictly indoor cat and hasn't been exposed to anything.

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1 Answer

Most Helpful Answer

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Answered By Rodrigo Roca, DVM

Veterinarian

Published on February 2nd, 2019

Hello, sorry to hear about Levon. This non-specific hair loss could be associated with different conditions. Most commonly, contact allergies from environmental allergies (dust mites, skin dander, detergents, grasses, heat) may cause this. Other causes could include anxiety and excessive grooming. External parasites or skin infections that could also cause constant itching, and finally, any metabolic endocrine diseases (diabetes and hyperthyroidism) may cause this. Less likely a hair disorder like becoming bald but he should not have had hair re-growth after his first incident. Oral supplements like essential fatty oils will help keep his hair shiny but may not promote his hair growth. If his hair loss progresses or continues, then he should be seen by his veterinarian to further discern between the different causes of hair loss. Hope this helps and best of luck.

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