Pitbull Allergies & Skin Issues: Signs, Triggers and Relief

Key takeaways:

• Atopic dermatitis (environmental allergy) is the most common diagnosis in itchy dogs, and Staffordshire Bull Terriers had 1.88 times the odds of it in a UK study of 22,333 dogs.
• In 297 dogs with confirmed food allergies, the top triggers were beef (34%), dairy (17%) and chicken (15%), not grains.
• An elimination diet needs at least 8 weeks to catch more than 90% of food-allergic dogs, per a 2015 veterinary evidence review.
• Blood and saliva allergy tests can't diagnose food allergy on their own, according to the Merck Veterinary Manual.

Pitbull allergies are common, and most show up on the skin: paw licking, belly rashes, hives, red ears and endless scratching. The usual causes are environmental allergens (pollen, dust mites, mold), food allergies (most often beef, dairy or chicken) and flea allergy. Allergies are managed rather than cured, so pin down the trigger with your vet first.

Why are pitbulls so prone to skin allergies?

Pitbull-type breeds turn up more often than average among dogs with atopic dermatitis, the itchy, inflamed skin disease behind most chronic scratching. "Pitbull" isn't one breed, so the strongest data comes from close relatives.

"1.88x the odds of atopic dermatitis in Staffordshire Bull Terriers compared with other dogs, from the records of 22,333 dogs under UK veterinary care in 2016." - Canine Medicine and Genetics

The study's authors noted the true rate is probably higher, since atopy is hard to diagnose. In a Swiss study of 743 itchy dogs, American Staffordshire Terriers were overrepresented among dogs with atopic dermatitis, the diagnosis in 59.1% of cases.

Skin allergy is common in every breed, too: atopic or allergic dermatitis was the top health issue in Nationwide's dog insurance claims for the 12th year running in 2023. For more on the breed, see our pitbull breed guide and our guide to American Bully dog food.

What are the most common pitbull allergies?

Many itchy pitbulls have more than one allergy type. Our overview of types of dog allergies covers each in more depth.

Environmental allergy starts young. The Merck Veterinary Manual notes that most dogs with atopic dermatitis first show signs between 1 and 3 years old. Food allergy is less common but very real. In a review of 297 dogs with confirmed food allergies, beef caused 34% of reactions, dairy 17%, chicken 15%, wheat 13% and lamb 5%. See our guide to chicken allergy in dogs.

Flea allergy has a signature pattern: Merck's guide to fleas in dogs describes "crusted, itchy skin over the hips, base of the tail, and thighs."

What are the symptoms of allergies in pitbulls?

Itching is the main symptom, and where your pitbull itches is a clue. Across 552 dogs with atopic dermatitis at five referral clinics, lesions showed up most often on the paws (62%), belly (51%), ears (48%) and face (39%).

• Constant scratching, licking or chewing, especially paw licking
• Red, inflamed skin or a rash on the belly, armpits or groin
• Head shaking or recurring ear infections
• Hives, bumps or raised welts
• Hair loss, with thickened, darker skin in long-standing cases
• Soft stool alongside skin signs, a pattern that can point to food allergy

Left alone, scratching breaks the skin and lets infection in. Hot spots, yeast infections and bacterial skin infections are the usual follow-ups. Dry, flaky skin can add to the itch.

How are pitbull allergies treated?

Treatment depends on the trigger, and most dogs need a combination. The International Committee on Allergic Diseases of Animals (ICADA) 2015 treatment guidelines put avoiding flare factors and good skin care, including more frequent bathing, first for chronic atopic dermatitis. For itch, they list glucocorticoids, ciclosporin and oclacitinib among the most effective medications.

At home, wipe the paws and belly after outdoor time in allergy season, wash bedding weekly and keep flea prevention going all year. Our article on home remedies for itchy skin covers what's safe to try between vet visits.

What's the best dog food for pitbulls with skin allergies?

For a pitbull with a suspected food allergy, the right diet is the one that passes a proper elimination trial: one protein (and one carbohydrate) your dog has never eaten, or a vet hydrolyzed diet, fed with nothing else for at least 8 weeks. In a 2015 evidence review, more than 90% of food-allergic dogs reached full remission by 8 weeks.

Once you know the trigger, look for a limited-ingredient dog food with a clearly named protein your dog tolerates. For atopic dermatitis, ICADA says raising essential fatty acid intake may help long term, but fatty acids don't calm an active flare. Our guides to dog food for itchy dogs and omega-3 dog food go further.

We make Spot & Tango, so here's the honest version. We don't make a chicken recipe, Fresh or UnKibble. UnKibble comes in beef, turkey, and cod and salmon, and we make a Fresh lamb recipe, all formulated with pet nutritionists to meet AAFCO standards. They aren't prescription diets, and Turkey + Sweet Potato lists salmon oil, so follow your vet's plan for a strict elimination trial.

What most pitbull allergy guides miss

Lamb isn't hypoallergenic. Its low 5% share likely reflects how rarely dogs ate it. Merck notes the most common food allergens "often correspond with the most commonly fed food sources," and warns that similar species can cross-react, giving lamb for a dog previously fed beef or milk as its example. Some experimental evidence also links chicken, whitefish and salmon. Our take: if you swap proteins, pick one your dog has truly never eaten. Lamb for dogs is a fine option only when it's new to your dog.

Allergy tests can't diagnose food allergy. Merck says serum IgE and saliva tests couldn't consistently prove or disprove food allergy in dogs. They can help pick foods for a trial, but the trial itself is the test.

Hidden proteins wreck elimination trials. Flavored chewable heartworm and flea medications generally contain beef, pork or soy protein even when the label doesn't say so, per Merck. Rawhides, pill pockets and flavored supplements count too.

When should I see a vet?

See your vet for open sores or bleeding from scratching, recurring ear infections, itching that lasts more than a couple of weeks, or itching with lethargy or appetite loss. Facial swelling, sudden widespread hives or any breathing trouble is an emergency. Our guide to why your dog is so itchy covers other causes.

Frequently asked questions

Are pitbulls allergic to chicken?

Some are. Chicken caused 15% of confirmed food allergy reactions in a review of 297 dogs of many breeds, behind beef and dairy. If your pitbull itches on a chicken-based diet, ask your vet about an elimination trial. Our chicken-free dog food guide covers options.

Can I give my pitbull Benadryl for allergies?

Only with your vet's dose. The ICADA guidelines say type 1 antihistamines have modest, variable effects on itch and should be given daily before a flare, not during one. Our guide to Benadryl for dogs covers safety.

Why does my pitbull have bumps or hives?

Sudden hives or bumps usually mean an acute reaction to an insect sting, a contact irritant or something eaten. Facial swelling or breathing changes need an emergency vet; otherwise, take photos and call your vet. Bumps that last for weeks can be something else, as our guide to lumps and bumps on dogs explains.

Do pitbull allergies go away?

Environmental allergies are usually lifelong but manageable, and many dogs improve a lot with the right routine. Food allergy signs stop once the trigger is gone for good and return if the food does. Flea allergy settles with steady flea control for every pet.

Are pitbulls hypoallergenic?

No, and no breed reliably is. In a US study of homes with dogs, allergen levels in homes with so-called hypoallergenic breeds didn't differ from other homes. A short coat doesn't mean less allergen.

The bottom line: Pitbull allergies are common, often lifelong and very manageable once you know the trigger. Keep flea control steady, and if food is part of the picture, run a real elimination trial with your vet before settling on a diet. When you're ready to choose a food, take the recipe quiz to see which of our recipes fits your pitbull.

Questions about your dog's diet or our recipes? Our customer care team is happy to help.

About this article

Written by the Spot & Tango editorial team, which covers canine nutrition and health for dog owners. Reviewed by a licensed veterinarian; facts and figures checked.

References & Sources:

• Pegram C., Wonham K., Brodbelt D., Church D., O'Neill D., Staffordshire Bull Terriers in the UK: their disorder predispositions and protections, Canine Medicine and Genetics (2020). https://pmc.ncbi.nlm.nih.gov/articles/PMC7510130/
• Brem S., Antoine L., Maina E., Favrot C., A vertical study on the prevalence and clinical symptoms of canine pruritic dermatoses in Switzerland, Schweizer Archiv fur Tierheilkunde (2025). https://pubmed.ncbi.nlm.nih.gov/40641263/
• Jaeger K. et al., Breed and site predispositions of dogs with atopic dermatitis: a comparison of five locations in three continents, Veterinary Dermatology (2010). https://pubmed.ncbi.nlm.nih.gov/20187918/
• Mueller R.S., Olivry T., Prelaud P., Critically appraised topic on adverse food reactions of companion animals (2): common food allergen sources in dogs and cats, BMC Veterinary Research (2016). https://pmc.ncbi.nlm.nih.gov/articles/PMC4710035/
• Olivry T., Mueller R.S., Prelaud P., Critically appraised topic on adverse food reactions of companion animals (1): duration of elimination diets, BMC Veterinary Research (2015). https://pmc.ncbi.nlm.nih.gov/articles/PMC4551374/
• Olivry T. et al., Treatment of canine atopic dermatitis: 2015 updated guidelines from the International Committee on Allergic Diseases of Animals (ICADA), BMC Veterinary Research (2015). https://pmc.ncbi.nlm.nih.gov/articles/PMC4537558/
• Pucheu-Haston C.M., Cutaneous Food Allergy in Animals, Merck Veterinary Manual (reviewed Aug 2025). https://www.merckvetmanual.com/integumentary-system/food-allergy/cutaneous-food-allergy-in-animals
• Merck Veterinary Manual, Fleas of Dogs (dog owners edition). https://www.merckvetmanual.com/dog-owners/skin-disorders-of-dogs/fleas-of-dogs
• Nicholas C.E. et al., Dog allergen levels in homes with hypoallergenic compared with nonhypoallergenic dogs, American Journal of Rhinology & Allergy (2011). https://pmc.ncbi.nlm.nih.gov/articles/PMC3680143/