If your dog is constantly scratching, licking, chewing, or rubbing their skin, there may be more going on than a simple itch. Common causes of itchy skin in dogs include parasites, skin or ear infections, and allergies.
Because these conditions can cause similar symptoms, and some dogs have more than one problem at the same time, finding the cause of your dog’s itching usually starts with a veterinary exam.
What Causes Itchy Skin in Dogs?
Some of the most common causes of itching in dogs include:
- Parasites, such as fleas and mites
- Skin or ear infections caused by bacteria or yeast
- Allergies, including environmental, flea, and food allergies
Your veterinarian will consider your dog’s symptoms, medical history, parasite prevention, diet, and other factors to determine what may be causing the itch.
Could Fleas or Other Parasites Be Making My Dog Itchy?
Yes. Fleas are one of the first things your veterinarian may consider when evaluating an itchy dog.
Dogs with flea allergy dermatitis are especially sensitive to flea bites. Even limited exposure can cause significant itching and skin irritation.
If your dog is not currently receiving appropriate flea and tick prevention, your veterinarian may recommend starting a preventive. Depending on your dog’s symptoms, testing for mites or other parasites may also be recommended.
Keep in mind that you don’t have to see fleas for them to be contributing to your dog’s itching.
Can a Skin or Ear Infection Cause Itching?
Yes. Bacterial and yeast infections can cause itching, redness, odor, hair loss, scabs, or irritated skin. Ear infections can also cause significant discomfort and may lead to head shaking, ear scratching, redness, discharge, or odor.
These infections are particularly common in dogs with underlying allergies.
Your veterinarian may perform tests such as skin or ear cytology, skin scrapings, or other diagnostics to look for infection, parasites, and additional causes of itching.
Treatment depends on what your veterinarian finds and may include medicated shampoos or mousses, topical treatments, ear medications, or oral antibiotics or antifungal medications when appropriate.
For dogs with recurring infections, identifying the underlying cause is an important part of preventing future flare-ups.
Could My Dog Have Allergies?
Allergies are another common cause of chronic or recurring itching in dogs.
Depending on the individual dog, allergic skin disease may be associated with environmental allergens, fleas, food, or a combination of triggers.
Signs of allergies in dogs may include:
- Frequent scratching or licking
- Chewing or licking the paws
- Red or irritated skin
- Recurrent skin infections
- Recurrent ear infections
- Hair loss
- Seasonal or year-round itching
Because these symptoms can also occur with other skin conditions, your veterinarian will typically rule out other causes before diagnosing allergic skin disease.
How Are Dog Allergies Treated?
There is no single treatment that works for every dog with allergies. Instead, your veterinarian will develop a plan based on your dog’s symptoms, triggers, and overall health.
Medications such as Apoquel® or Cytopoint® may be recommended to help control allergic itching. In some cases, corticosteroids or other medications may also be appropriate.
Controlling the itch can make your dog more comfortable, but dogs with persistent or recurring symptoms may need additional testing or long-term allergy management.
Depending on your dog’s history, your veterinarian may recommend an elimination diet trial or environmental allergy testing followed by allergen-specific immunotherapy.
How Does Allergy Testing for Dogs Work?
Environmental allergy testing may involve intradermal skin testing or blood testing. These tests can help identify allergens that may be included in a personalized immunotherapy plan.
Allergy testing alone does not diagnose atopic dermatitis. Your veterinarian will first consider your dog’s symptoms, history, and other possible causes of itching.
If immunotherapy is recommended, treatment may be given through injections or oral drops formulated around your dog’s relevant environmental allergens.
How Do Veterinarians Test for Food Allergies?
A strict elimination diet trial followed by a food challenge is the most reliable way to diagnose food allergies in dogs.
Your veterinarian may recommend a prescription hydrolyzed protein diet or another appropriate elimination diet for several weeks. During this time, it is important to follow the diet closely and avoid unapproved treats, table food, flavored supplements, and other foods.
If your dog’s symptoms improve, foods or ingredients may then be reintroduced according to your veterinarian’s instructions. If itching or other symptoms return, this can help identify a dietary trigger.
Blood, saliva, hair, and skin tests marketed for diagnosing food allergies are not considered reliable substitutes for a properly conducted elimination diet and food challenge.
When Should I Take My Itchy Dog to the Vet?
Occasional scratching can be normal. Persistent, frequent, or intense itching deserves veterinary attention.
Schedule an appointment if your dog is repeatedly scratching, licking, biting, or chewing their skin, particularly if you notice:
- Red or inflamed skin
- Hair loss or bald spots
- Scabs, sores, or open wounds
- Unusual skin or ear odor
- Frequent paw licking or chewing
- Recurring ear problems
- Head shaking
- Itching that interferes with sleep or normal activities
Identifying the cause early can help relieve your dog’s discomfort and reduce the risk of secondary skin and ear problems.
Frequently Asked Questions About Itchy Dogs
Why is my dog itchy if I don’t see any fleas?
Fleas aren’t the only cause of itching, and fleas can sometimes be difficult to spot. Allergies, mites, and bacterial or yeast infections can also make dogs itchy. A veterinary exam can help determine what’s causing your dog’s symptoms.
Why does my dog keep licking and chewing their paws?
Paw licking can have several causes, including allergies, infection, irritation, or other medical concerns. If the licking is frequent or your dog’s paws are red, irritated, swollen, or uncomfortable, schedule an exam.
Can allergies cause ear infections in dogs?
Allergies can contribute to recurring ear problems in some dogs. If your dog frequently develops ear infections along with itchy skin or paws, your veterinarian may recommend investigating an underlying allergy.
How can I help my itchy dog?
The best treatment depends on the cause. Because parasites, infections, and allergies can all cause similar symptoms, avoid relying on home remedies without knowing what is making your dog itch. Your veterinarian can identify the likely cause and recommend an appropriate treatment plan.
Help Your Itchy Dog Find Relief
If your dog is scratching, licking, or chewing more than usual, don’t wait for the problem to become more uncomfortable. Contact us at (828) 256-2151 to schedule an appointment so we can get to the bottom of the itch and develop a treatment plan for your dog.
Learn More About Allergic Itch in Dogs
Take the Zoetis allergic itch quiz:
https://www.zoetispetcare.com/products/apoquel/quiz/allergic-itch
Learn more about Apoquel:
https://www.zoetispetcare.com/products/apoquel
Learn more about Cytopoint:
https://www.zoetispetcare.com/products/cytopoint
Learn more about allergy testing and immunotherapy:
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