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What causes a dog to itch constantly and lose patches of fur?

Updated On September 23rd, 2025

Pet's info: Dog | Pomeranian | Male | unneutered | 4 years and 5 months old | 7.7 lbs

My 5 year old dog has patches of fur missing because it itches alot

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1 Answer

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Answered By Kevin Sanada, DVM

Veterinarian

Published on October 23rd, 2017

Itchy skin is often due to the following things: 1) Allergies - this can happen suddenly and is usually due to an environmental (i.e pollen) cause. 2) External parasites - fleas, lice and mites can all cause intense itching. It's good to check him for fleas and get treatment if needed. 3) Over-bathing, or using the wrong product for bathing - Bathing too often can cause the skin to get dry and irritated. Dogs should normally be bathed no more than once a month with a shampoo that is labeled for dogs. If you bathe more than that, or use a shampoo or soap that is meant for people, then you could be damaging the normal protective barrier of the skin. One thing you can do for itchy skin, is give a bath with cool water using an oatmeal or aloe shampoo. You can get these shampoos at the pet store. I hope this helps you to identify the problem. If not, then it would be worth taking him to the vet. We can usually discover the cause quickly and provide the most effective treatment.

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