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What causes my dog's balding dry patches and white bumps?

Updated On September 23rd, 2025

Pet's info: Dog | Portuguese Water Dog | Male | neutered | 2 years and 4 months old | 63 lbs

My dog has some balding dry patches with white bumps. He is up to date on ticks, flee and heart worm meds. Should I be worried, or take him to the vet?

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1 Answer

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Answered By Jessica Keay, DVM

Veterinarian

Published on June 9th, 2018

Any time we have areas of hair loss it is recommended that your dog be examined by a vet. From one photo it looks like we could either have dandruff or epidermal collarettes which are a sign of bacterial infecition of the skin. The pinpoint white areas could be pustules (from bacteria) or calcinosis cutis which can be see with some endocrine diseases. The vet will examine Max and may recommend some testing to check for bacteria or parasites or endocrine diseases. Treatment will depend on their findings.

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