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My 10-month-old dog has a rash and swollen vulva. Is she in heat?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | unspayed | 37 lbs

Looking for some advice my 10 month old Staffie cross came out with a rash all over this morning and a swollen sack kind of thing above the vagina

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Answered By David Darvishian

Veterinarian

Published on August 5th, 2017

Hi and thanks for using Petco Pet Education Center, formerly Petcoach! Sorry to see that Skye is having some problems. A skin rash can be caused by many things including a bacterial skin infection secondary to fleas, ticks, mites, allergies, contact irritants in her environment, drug reactions, reactions to flea/tick products, skin reactions to intestinal worms, nutritional problems etc. I see she is not spayed but don't have an age. The swelling near her vagina/vulva looks like the beginning stages of her heat cycle. Swelling occurs first then they will develop the bloody discharge of the heat cycle. I would advise a good Oatmeal shampoo without detergents/soap and a good Oatmeal conditioner for her, a good flea/tick product, and a good diet. If the rash continues or she becomes very itchy, I would advise taking her to your veterinarian and let them evaluate her and possibly recommend some tests to diagnose what the problem is. There are skin tests that can be performed if mites or fungal organisms are suspected. Once a diagnosis is made, they can advise a sound treatment plan. Monitor her for signs of heat- swelling, bloody discharge, decreased appetite, wanting to roam, odd behavior, etc. You can talk to your veterinarian about spaying her also. Good luck with Skye.

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