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My dog scratches his back near tail, no irritation. What's wrong?

Updated On September 23rd, 2025

Pet's info: Dog | Beagle | Male | neutered | 20 lbs

I worm and flea Woody regularly (monthly) but the last few days he has been irritated by something on his back near his tail - nothing seems to relieve it. I can’t see any irritation - any ideas what could be causing it?

2 Answers

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on July 25th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! This is possibly due to allergies. It really comes down to figuring out what is causing his allergies so that they can be treated or the specific allergen avoided. A secondary infection is likely and also needs to be addressed. There are many things that can cause allergies though in most cases they can be broken down into 3 big categories: flea, food and environmental allergies. Allergies are usually worked up in a stepwise fashion starting with flea allergies as this is the easiest and cheapest to take care of. If not on a flea preventative, then it would be a good idea to get started on one. If already on one then it would be a good idea to change to something else (there are many new products out in the market). If not improved in 1-3 months then it is time to move on and check for food allergies by switching to a novel diet (new protein and new carbohydrate). If that does not seem to be the issue then you are left out having to check for environmental allergies which require blood and/or skin tests. Allergies can be very frustrating to deal with at first but so rewarding at the end when we are able to treat them effectively!

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    Answered By Shaneez Wallani, DVM

    Veterinarian

    Published on

    Woody may be dealing with anal gland issues, parasites such as tapeworms (which are not treated by most broad spectrum dewormers), skin irritation in the area, or other problems such as diarrhea that can cause sensitivity. I recommend you have him evaluated by a veterinarian to help determine the cause and treat it. Here is some more information on anal sacs (although I don't recommend trying to express them yourself, as Woody may be sore. https://veterinarypartner.vin.com/default.aspx?pid=19239&id=4951501 I hope he feels better soon!

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