My pit bull puppy has a sudden rash on his back leg. What's wrong?

Question

My 1 year old pit bull puppy out of nowhere developed a rash. He was fine this morning and this afternoon I noticed a rash on his back thigh. Pet's info: Dog | Pit Bull Terrier | Male | unneutered | 1 year and 5 months old | 80 lbs

Summer Walker, DVM, MS · Accepted Answer

Oh, poor Lucky! It is common for dogs to develop rashes this time of year due to the increase in pollen counts (environmental allergy) and parasites (fleas, mosquitos) that we typically see. The lesions that are present on Lucky's legs look to resemble what we see in patients with superficial pyodermas (bacterial infections of the skin), but we can also see these with patients that develop Demodectic mange (a mange mite that is found normally in the hair follicle but experiences an overgrowth). You can try bathing Lucky in a soothing shampoo, such as an aloe and oatmeal shampoo. If the lesions become worse or Lucky becomes itchy it would be best to have him seen by his veterinarian to see if any additional treatment is required. A skin scrape may be performed to rule-out Demodectic mange, and a skin cytology may be performed to check for the presence of bacteria. Some patients then require medicated topical shampoos, +/- systemic antibiotics, +/- anti-pruritic (anti-itch) medications to try to soothe the skin.

My pit bull puppy has a sudden rash on his back leg. What's wrong?

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