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My dog developed a red hairless bloody mass on her skull overnight. I don’t think she bumped her head on anything.

My dog developed a red hairless bloody mass on her skull overnight. I don’t think she bumped her head on anything.

Updated On May 15th, 2024

Pet's info: Dog | Mixed Breed | Female | spayed | 7 months old | 50 lbs

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Answered By Lindsey Edwards MVB, BSc, IVCA

Veterinarian

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Poor Marley! Unfortunately there are a number of possible reasons for these raised nodules and a picture cannot diagnose the underlying cause. Itis not possible to distinguish between a wound from a bug bite, cyst, benign histiocytoma or even a tumour without a physical exam and possible testing by an aspirate taken by a needle during the exam or even removal and biopsy. I recommend you follow up with your regular vet, especially if it increases in size, is painful or persists.

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