Why is my dog scratching and chewing his tail even after flea treatment?

Related Answers from Veterinarians

• Answered By Lauren Jones VMD

  Veterinarian

  Published on May 5th, 2017

  I can see two areas with hair loss and what appear to be red bumps (possibly papules or pustules) in the photos. Some of the most common causes of hair loss with these red lesions are related to either underlying allergies (to fleas, food or the environment), ringworm or mange. I'm assuming that Rocky is also itchy based upon the appearance of these lesions, and excessive scratching can lead to the development of skin infections. Irritation from itchiness can cause a loss of appetite due to discomfort. Make sure that Rocky is receiving a high quality flea preventative (such as Nexgard, Bravecto or Advantix) regularly. Rocky should also be examined by his vet, as he may need a skin scrape (to rule out the mites causing mange) and/or fungal culture (to rule out ringworm). Both ringworm and sarcoptic mange can be transmitted to other animals and people, so it is important to rule out these issues. If a skin infection is diagnosed, oral antibiotics will be needed. Until you can take Rocky to his vet, you can try bathing him in a gentle oatmeal based dog shampoo and using an e-collar (cone) to prevent him from scratching and causing further irritation to the skin. I hope that he's on the mend soon!

  

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• Answered By Amber W

  Veterinarian, Certified Veterinary Acupuncturist

  Published on December 1st, 2017

  Aw poor Rocky! It's likely he may have a food allergy or atopy as these can cause itching year round. It also looks like he may now have a bacterial skin infection secondary to the itching and allergy.
  
  It would be best to have Rocky examined by a veterinarian. He can be checked for other causes of itching and medication can be prescribed. There are many new medications for allergies available including Apoquel and Cytopoint. He may need antibiotics or a medicated shampoo if infection is present.
  
  I'd also recommend Rocky be on a quality flea and tick preventative like Advantix, Revolution, or Bravecto. You can also try using an oatmeal based shampoo to soothe Rocky's skin until he can get in to see the veterinarian.
  
  Thanks for using Petco Pet Education Center, formerly Petcoach! I hope Rocky is feeling better soon!

  

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• Answered By Ana M, DVM

  Veterinarian

  Published on November 7th, 2018

  Thank you for submitting your question regarding Rocky. Yes, he needs to see his veterinarian regarding his hair loss and itching as it is not normal. He may need skin testing to rule out mites or ringworm. Allergies will likely be discussed as well. This could be an environmental allergy or to something in his diet. In this case, antibiotics are used to treat any secondary infection and a medication can be prescribed to stop the itching. This will allow the hair to regrow and make him more comfortable. If allergies are suspected, then options can be discussed for long term management. I hope this information helps!

  

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