My dog has a non-itchy, flat rash under her chin. What could it be?

It may be an allergy or an infection in the hair follicle. Make sure you are using stainless steel bowls and wash them daily. Keep the area clean with soap and water or use clearsil wipes in the area. You can apply cortisone cream to help and if this does. It show improvement then I would have a vet check the area

These look like acne type lesions to me and can occur in dogs secondary to allergies or contact hypersensitivity from things like plastic food bowls. A skin growth or insect bite might be another possibility. I'd recommend having your vet take a look in person to determine what these are - they might recommend taking a sample using a small needle to examine under the microscope.

You will need to take your dog to a veterinarian for a skin exam. Your dog could be suffering from an allergy, mites, fleas, a bacterial or fungal infection. Each of these requires a different treatment, so it is important to find out what is causing the the rash. Your vet will do a thorough exam and maybe a skin scrape. He will then discuss the options with you and then prescribe medications, possibly give an injection to stop the itching, if your dog is itching.

Thank you for using Petco Pet Education Center, formerly Petcoach! I can see that Bauer has some red and raised areas in his underarm. This may be caused by a skin infection, exacerbated by allergies, which can be itchy. I recommend limiting Bauer's diet to only his regular dog food and using a gentle antibacterial dog shampoo on the area. If it does not improve over the next several days, Bauer may need to be seen by his vet for antibiotics. I hope this helps and that all is well!

Most often when we see a lesion like this on the skin it is the result of an insect bite, in particular a biting fly such as a black fly. If your dog is acting normally then I would just monitor the area. If the lesion grows in size, becomes raised or oozes a discharge, or your dog develops many more lesions, becomes lethargic or very itchy a vet exam is recommended.

I am not sure where this cluster of pimples is, but if it is on the chin this could be chin acne. This could also be a skin allergic dermatitis to some type of allergen (chemical or environmental). The almost clear contents inside mixed with blood is probably a folliculitis (inflamed hair follicles) which typically requires antibiotics and medicated cleansers to flush out the follicles. If you canno get to your vet right away for treatment, you can try gently cleansing the area with an antiseptic like Betadine diluted 50:50 with warm water or Chlorhexidine 3% diluted as instructed on the bottle (preferred)- available at most Walmart's, to see if this calms things down a bit. Any further treatment depends on the location of the rash and getting your vet involved may be best for Abbie, because he/she can thoroughly examine the area and get her on stronger medications to resolve the skin.

That looks quite uncomfortable. I'm surprised that she isn't super itchy. I don't see any obvious causes in the picture - such areas that make me suspicious of a bacterial or yeast infection. My top guesses be allergies (flea, food, environment, or even a contact allergy such as being allergic to your laundry detergent), with skin parasites or a superficial infection definitely possible. Since it's such a large area, it's going to be hard to apply an ointment - if you have a medicated bath for another dog (one that is for superficial infections) that may help. Wiping the area with witch hazel could calm in down. A mild (1%) hydrocortisone cream could also calm down the area. I would definitely recommend getting her to the vet as soon as possible. They are likely to need to do an exam saying she's in good health before she can be added to the insurance, and she's not going to qualify until her skin is better.