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My dog has red scaly spots and is losing hair. What should I do?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | spayed | 11 months and 5 days old | 50 lbs

My dog has patches of missing hair. I've noticed red scaly spots.

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1 Answer

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Answered By Maria DVM

Veterinarian

Published on May 21st, 2018

This can be a few different things. MItes, allergies or even fleas. I would say less likely fleas due to the location of the hairloss. It can be allergies or probably a type of mite. There are two different mites that it can commonly be. One is called Demodex and this is a normal mite in the hair follicle but does tend to over grow in puppies, causing hairloss. This is easily treated and found. Your veterinarian can perform a skin scraping to determine if this is what Cookie has. The other mite is hard to find and causes intense itching. It also can easily be treated and if she is negative for Demodex or has the symptoms of Scabies sometimes we just treat for Scabies to be sure. I would recommend bringing Cookie to the vet to have them look at her skin and perform a skin scraping. If they feel it is more allergy related, there are great options with allergy medication in dogs now and your vet can discuss the options you have for Cookie. Thank you for using Petco Pet Education Center, formerly Petcoach.

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