Petco Text Logo
Petco Pet Logo

Dog licking fur raw, bleeding, warm skin. Vets can't diagnose. What to do?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | 10 lbs

My dog eats away her fur until she is raw and bleeds, her skin is warm and I don’t know what to do she has been to the doctors a couple times but nothing has helped

This question includes photos that may contain sensitive content. Click to view.

View more to consider that the photos may include sensitive content.

4 Answers

Most Helpful Answer

Image profile

Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on July 27th, 2018

Place an e-collar (cone) on Angel to prevent further licking or chewing. Rule out fleas by treating with a monthly preventative for at least 3 consecutive months. Vacuum the house and wash all bedding. Use an area treat such as Indorex or Knockout ES. Once fleas have been ruled out, consider other parasites, such as mites. Your veterinarian may need to perform skin scrapes to diagnose mites. Infection (bacterial or fungal) should also be ruled out. This may require submitting samples for cultures. If all is negative and conservative treatment (steroids, antihistamines, antibiotics) are ineffective, a consult with a veterinary dermatologist would be recommended. Discuss allergy testing, hydrolyzed diets and food elimination trials with the vet. Allergies can be frustrating to diagnose, but once you pin them down, management becomes quite easy.

Vote icon

2Pet Parents found this answer helpful

Related Answers from Veterinarians

  • Image profile

    Answered By Angel Alvarado, LVT

    Licensed Veterinary Technician

    Published on January 3rd, 2017

    Place an e-collar (cone) on him to prevent further licking or chewing. Have him examined by your veterinarian to diagnose skin infection, allergies or external parasites such as mites. Lice are typically species or host specific meaning dog lice stick to dogs and human lice stick to humans.

    Vote icon

    1Pet Parents found this answer helpful

  • Image profile

    Answered By Angel Alvarado, LVT

    Licensed Veterinary Technician

    Published on July 11th, 2018

    Place an e-collar (cone) on Buddy to prevent further licking. If the skin is broken or inflamed, he should be physically examined by your veterinarian. Your vet can check Buddy over for fleas or mites and can test for bacterial or fungal infection. Another potential cause may be allergies. Allergies can be frustrating to diagnose since they have many causes (flea bite, contact allergy, inhaled allergy and food sensitivity). Discuss allergy testing, antihistamine use, hydrolyzed diets and food elimination trials with your vet. Do not medicate Buddy without the advice of your vet. Anything you apply will likely be licked off and ingested which may cause stomach upset or worse.

    Vote icon

    1Pet Parents found this answer helpful

  • Image profile

    Answered By Dr. Elizabeth

    Veterinarian

    Published on June 24th, 2019

    These issues for Wilf could be several things including allergies to fleas, allergies to something in the environment, food allergy or endocrine disease. Without knowing further information, it's hard to know how best to advise. Parasites are often ruled out with an oral medication like Simparica. Food allergy is best ruled out with a proper diet trial using a hydrolyzed protein diet. Endocrine diseases are detected with blood work. Environmental allergies are a little more difficult to detect but a response to therapy or a blood test can give an indication. If your normal veterinarian cannot determine the underlying cause, I recommend referral to a dermatologist. Wilf may need a blood or intradermal testing to look for environmental allergies since not all dogs respond to antihistamines, some need immunotherapy. Also, if you have not conducted a proper diet trial with the hydrolyzed protein, this would be a good idea. There are a couple things you can do at home and they can help but they are unlikely to address the underlying cause. You can try adding in an omega 3 fatty acid supplement for dogs, this can help improve the skin health. You may also try changing his diet to something like Royal Canin or Nutro as they are aimed at skin health. Also protect the area from trauma by having Wilf wear an elizabethan collar at all times. Best of luck and please feel free to post any additional questions.

    Vote icon

    2Pet Parents found this answer helpful

See More Answers
image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored