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My dog has a hard bump on her head. Is it allergies or an injury?

Updated on September 23rd, 2025

Pet's info: Dog | Pit Bull Terrier | Female | spayed | 1 year and 8 months old | 61 lbs

My dog has been dealing with allergies this week, and though I’m not sure this is related, I am now seeing a knot on the top of her head that I never noticed before. Could the bump be related to her allergies? It’s hard, could she have bumped her head?

2 Answers

Most Helpful Answer

Ana M, DVM

Answered By Ana M, DVM

Veterinarian

Published on June 8th, 2018

Thank you for submitting your question regarding Brooklyn. I do not believe the bump is related to her allergies as it appears to be underneath her skin. Allergies typically affect the skin itself. She will need to see her veterinarian for a procedure known as a fine needle aspirate. The veterinarian will use a small needle to collect a sample of cells and evaluate them under the microscope. The goal is to be able to tell you what the bump is and if treatment is necessary. I hope this information helps!
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Related Answers from Veterinarians

  • Answered By Jessica Keay, DVM

    Veterinarian

    Published on October 5th, 2017

    I am sorry to hear about Rudy! It looks like she could have a folliculitis/dermatitis here on her face. This could be the result of a bacterial infection, a fungal infection (such as ringworm), or parasites. I would recommend a visit to the vet to examine the area. They may recommend testing including cytology to check for bacteria or yeast, a fungal culture to test for ringworm, or a skin scrape to test for mites. They can then prescribe what medications are needed such as antibiotics and special medication to decrease inflammation/itching if they suspect it is secondary to allergies.

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    1Pet Parents found this answer helpful

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