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Why is my puppy scratching constantly? What dog allergies cause it?

Updated On September 23rd, 2025

Pet's info: Dog | Yorkshire Terrier | Female | unspayed | 2 months and 29 days old | 5 lbs

What allergies could my dog have? I would like just a brief description of the possibilities. She is 3 months, 5lbs, a yorkie. Only goes outside to go to the bathroom. She scratches a lot, I've noticed. Even after being put on Trifexis.

2 Answers

Most Helpful Answer

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Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on October 9th, 2017

Allergies can occur due to various factors, it could be something in the food, something outside in the environment or something that comes from inside the house (storage mites for example). it is usually very difficult, sometimes impossible to find the cause of the allergies.

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    Answered By Jenna Beyer, DVM, MBA, cVMA

    Veterinarian, Certified Veterinary Acupuncturist

    Published on October 29th, 2018

    Possibly, but dry skin isn't usually intensely itchy. Many causes of itching or overgrooming are caused by parasites, such as fleas. If Buddy isn't on a good quality monthly flea preventative, that is a good starting point. Other possible causes are anxiety, food allergies or other allergies, ear mites, bladder inflammation, etc. Here is a good article that discusses causes of overgrooming: https://veterinarypartner.vin.com/default.aspx?pid=19239&id=4952646

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