Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Why Does My Dog Have Itchy Bumps? 6 Vet-Reviewed Possible Reasons

Share

Dog ears with broken capillaries Ear swelling and illness due to scratching caused by fungus or yeast

Itchy bumps on your dog can be extremely worrying for you, and irritating and uncomfortable for your pet. They can have a variety of causes from allergies to parasites like fleas and mites, your dog should be checked by a vet so that they can be treated appropriately.

If your dog has itchy bumps on their skin, keep reading for a list of several possible reasons.

dogster face divider

The 6 Possible Reasons Why Your Dog Has Itchy Bumps

1. Allergies

Close up of redness and bump in the eye of a dog
Image Credit: Masarik, Shutterstock

One of the most common causes of itchy bumps on the skin is skin allergies. Like humans, a dog’s immune system can overreact to certain substances (allergens) and cause signs that affect the skin. There are different forms of skin allergies. Dogs can suffer from long-term allergies to things in the environment such as pollen and house dust mites. They can also be allergic to certain foods such as beef, dairy, and chicken.  Although less common, sudden allergic reactions can occur due to things like insect bites and stings or medications. These reactions can cause hives (urticaria) and rashes which appear suddenly.

What Can You Do About It?
If your dog is having a sudden, severe allergic reaction and has developed hives or any swelling (face, legs, tongue), then you should contact your vet straight away and follow their advice.

Managing your dog’s long-term allergies ideally requires determining what is causing the reaction and avoiding it if possible. It is important to work with your vet to choose the right treatment plan for your dog. A special diet, medication to tackle the itch, strengthening the skin barrier with essential fatty acid supplements, and topical treatment to prevent and treat infections may be needed. Allergy vaccines (immunotherapy) are also available.


2. Flea Infestation

If your dog is suffering from a flea infestation, you may notice raised bumps on the skin from the flea bites, and you will also likely notice your dog itching and scratching continuously. You may be able to see tiny fast moving, dark adult fleas in the coat, or see flea dirts (flea poop), which look like small black specks in their fur. Some dogs have an allergy to flea saliva and will have a more marked itchy reaction to flea bites.

What Can You Do About It?
Flea infestations can quickly get out of hand, so you’ll need to deal with them immediately. There are many remedies for fleas, including oral medications and topical spot-on options. You should consult with your vet to choose the appropriate treatment for your dog. It’s always best to prevent infestations by using regular vet-approved flea-and-tick medication. That will also help protect your pet from other parasites, like heartworm. You will also need to clean and treat your home concentrating on areas your pet frequents and bedding.

3. Parasitic Infestations

Dog with skin disease problem
Image Credit: Choun JC, Shutterstock

Other parasites besides fleas can cause itchy bumps on your dog’s skin, including mites. Mites include parasites such as Sarcoptes which can lead to scabies, or sarcoptic mange. Scabies is very itchy and the areas most commonly affected are the ear margins, elbows, and hocks (ankles). As well as itchy red bumps, there are often crusts and hair loss. Sarcoptic mange is contagious to other dogs and humans.

What Can You Do About It?
Several prescription medications are effective against these mites including topical and oral treatments. Your vet will discuss the best treatment option for your dog.

4. Bacterial Infections

Pyoderma, the medical term for bacterial skin infection, can cause pimples or bumps on the skin that are itchy and may be filled with pus. Other signs can include dry and flaky skin, hair loss, and a musty odor. Anything that damages the skin barrier, like itching and scratching due to allergies, predisposes dogs to developing pyoderma.

What Can You Do About It?
Medicated washes and shampoos containing antibacterial ingredients are frequently prescribed. Some more severe cases of pyoderma may require oral antibiotics. As pyoderma is frequently due to an underlying condition, your vet may want to run further tests so these can be identified and addressed.

5. Fungal Infections

Ringworm lesion in dog
Image Credit: Lolly66, Shutterstock

Ringworm, a common fungal infection, can cause areas of hair loss with crusting, and sometimes, itchy bumps. If you are concerned your dog has ringworm, then visit your vet for advice and treatment. Other conditions look similar, but ringworm can be passed onto you and other people who come into contact with your dog, and it is important to get it diagnosed and treated appropriately.

What Can You Do About It?
After a visit to the vet, the treatment that your dog receives will depend on the severity of the condition. In certain cases, topical medication will be enough, like a lotion or medicated shampoo. However, some will also need oral antifungal medication.

6. Contact Dermatitis

Contact dermatitis occurs when a dog’s skin reacts to contact with irritants or allergens, such as chemicals in cleaning products or certain plants, leading to red, itchy bumps.

What Can You Do About It?
Try to keep all dangerous materials out of reach of your pet so they don’t accidentally come into contact with them. It’s also important to use dog-specific shampoo when bathing your dog, as human products are often too harsh. The same goes for any cleaning wipes or other products that you use on your pet.

When it comes to choosing the right grooming products for cleaning your pup to prevent dog odors and avoid skin irritation, there are two products we cannot recommend highly enough. The Oatmeal Pet Shampoo from Hepper is formulated with aloe and oatmeal to soothe skin and hydrate the coat; and for a convenient on-the-go option to quickly refresh sensitive areas, Hepper's Wash Wipes will help you keep your dog clean from head to tail with moisturizing ingredients. Both products are pH-balanced and formulated with pet-friendly ingredients, free of harsh soaps, chemicals, and dyes. Give this duo a try to soothe, heal and nourish your dog's coat, and leave them with an irresistible just-left-the-spa cucumber and aloe scent.

Image Product Details
For Bathing Hepper Oatmeal Pet Shampoo Hepper Oatmeal Pet Shampoo
  • Safe for Dogs & Cats
  • Soothing Oatmeal
  • Lightly Scented
  • For On-The-Go Hepper Wash Wipes Hepper Wash Wipes
  • On-the-go cleaning
  • Sensitive Areas
  • Gentle & effective
  • At Dogster, we've admired Hepper for many years, and decided to take a controlling ownership interest so that we could benefit from the outstanding designs of this cool pet company!

    dogster paw divider

    Frequently Asked Questions

    How Can I Tell If My Dog’s Itchy Bumps Are Due to Allergies or Something Else?

    Skin allergies in dogs are common, but as you can see, many other skin conditions cause similar signs, including itchy bumps. Diagnosing allergies involves ruling out other problems that can cause similar skin signs, like parasites and skin infections. It can take time and patient,e but working with your vet is the best way to find out if your dog’s skin bumps are due to allergies.

    Vets may suggest an elimination diet trial with a new source of protein your dog hasn’t had before or a hydrolyzed diet to help diagnose food allergy. Allergy skin prick (intradermal testing) and blood tests for environmental allergens are also available.

    If your dog shows signs of the symptoms above or you suspect they might be suffering from underlying health issues, you should contact your vet.

    If you need to speak with a vet but can't get to one, head over to PangoVet. It's our online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

    PangoVet_Mention-in-Content Savings V1

    Should I Bathe My Dog If They Have Itchy Bumps?

    Bathing can help relieve itchy skin, especially if you use a gentle, hypoallergenic, or medicated shampoo prescribed by your vet. However, bathing too frequently can wash away important oils and dry out your dog’s skin, which can make the itching worse.

    Are There Any Home Remedies for Itchy Bumps on Dogs?

    Certain home remedies can provide temporary relief for some skin conditions, such as oatmeal baths or coconut oil. However, these should not replace veterinary care, especially if you don’t know the underlying cause of the itchiness or if it has been going on for more than a few days.

    pomeranian dog taking a bath
    Image Credit: Evgeniy pavlovski

    dogster face divider

    Summary

    There are several reasons that your dog might have itchy bumps on their skin, with allergies and skin infections being common causes. Fleas and other parasites might also cause bumps, as can contact dermatitis.

    Schedule a visit with the vet if you notice any bumps on your dog, it can often be easily treated once the underlying cause has been determined.

    See also:


    Featured Image Credit: Kittina05, Shutterstock

    Want content like this delivered to you?

    Sign Up For Our Newsletter

    News, insights, expert advice, and everything dog

    * By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




    How useful was this post?

    Click on a star to rate (you can leave written feedback after clicking submit)

    Help us improve Dogster for pet parents!

    Your feedback really matters.

    What did you like about this post? Also how can we improve it?

    Join the conversation

    Leave a Reply

    You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


    Talk With A Vet Online

    Peace of mind,
    anywhere, anytime

    Affordable vet advice

    Ask Dr. Paola- Help! My Dog’s Sleeping Habits Have Changed! (May 18, 2026)

    Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

    The Crate Setup Most Dog Owners Get Wrong (And How To Fix It!)

    Most people assume that if their dog hates the crate, the crate is the problem. So they try a bigger one, a different...

    1,500 Beagles Rescued from Wisconsin Lab Farm – Here’s Where They’re Going

    You may remember that a few weeks ago, we reported on a tense situation at Ridglan Farms, Wisconsin, a facility infamous for housing...

    Dogster’s Weekly Photo Contest Winners: Window Watchers (May 11, 2026)

    Every week our team gets the privilege of sorting through our readers photos to choose what dogs will win this weeks contest! See...

    More related

    Top 11 Dog-Friendly Beaches in Georgia: Off- & On-Leash Places (2026 Update)

    Georgia is known for many things, including the Atlanta Braves baseball team, President Jimmy Carter, and being at the center of the Civil...

    Are Dogs Allowed in Macy’s? (Updated In 2026)

    Macy’s is one of the largest department store chains in the United States. They have a wide selection of products and excellent customer...

    Norfolk Terrier Dog Breed: Info, Pictures, Traits & Care

    The Norfolk Terrier is an amiable little dog, measuring up to 12 inches tall. They are alert, lively, and playful, and known to...

    Easy Walk Harness: Instructions & Selecting the Right Type

    Do you have a dog who has a habit of pulling at their leash every time you’re out for a walk? Maybe they...

    Keep reading

    Fromm Dog Food Review 2026: Recalls, Pros & Cons

    Review Summary Wisconsin is best known for its cheese but is also home to Fromm. This homegrown American company has been making dog food for more than a century and uses the best ingredients—many of them sourced locally—to create premium-quality...

    Dogster_Fromm Dog Food Review

    Can Dogs Eat Apricots? Vet-Verified Nutrition Facts & Precautions

    Dogs are facultative carnivores, meaning that like omnivores, they can eat some plant matter as well as meat. Many like eating sweet foods and can be found eating windfall fruit. If your dog has a sweet tooth, consider feeding them...

    fresh apricots

    Can Dogs Eat Garlic Bread? Vet Approved Facts, Safety Guide & FAQ

    Maybe you had some yummy garlic bread for supper and your dog stole a bite, or you’re just wondering if you can feed them some. Can dogs eat garlic bread? The short and simple answer is no. Garlic bread is...

    Can Dogs Eat Garlic Bread

    Can Dogs Eat Cassava? Vet Reviewed Nutrition Facts

    Dogs are known for eating just about anything that they can get their paws on, whether it’s a piece of meat, something sweet, or even a vegetable. You may not think that a dog would actually want to eat something...

    Can Dogs Eat_Cassava

    Can Dogs Eat Banana Peppers? Vet-Reviewed Nutrition Facts & FAQ

    Next time grilling season rolls around, you may find yourself throwing some peppers on the grill, but when your dog comes over to give you those puppy dog eyes, you might wonder if they can eat peppers. In some cases,...

    Can Dogs Eat Banana Peppers

    Vitamin K for Dogs: 5 Vet-Approved Food Sources

    Vitamin K is a necessary nutrient for all humans and animals. In addition to making this vitamin within our bodies, we can get the vitamin from the foods that we eat, and so can your dog! Here are five great...

    white samoyed dog looks at a plate of vegetable salad

    PetPlate Dog Food & Supplement Subscription Review 2026: Door Delivery For Your Pup Made Fresh

    Are you considering switching your dog to a dog food delivery service but struggling to find one that includes enough variety to suit your dog’s needs? If that’s the case, PetPlate might be the best choice for you. This subscription...

    DOG_SAPR_PetPlate Human-Grade Dog Food

    8 Best Dog Foods for Hair Loss in 2026: Reviews & Top Picks

    Shedding is common with some dog breeds, but if you experience more shedding than usual or hair coming out in clumps, leaving behind bald patches, that’s a sign that something is amiss. Whether your dog is suffering from a skin...

    a shetland sheepdog shedding a lot

    Love Dogs? So Do We! Join the Dogster Community

    Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




    Sign up for the Dogster Email Newsletter