Skin Problems in Dogs
Dog Health Guides · Skin and coat
Skin Problems in Dogs: Itching, Rashes, Hair Loss and What Helps
If you are reading about skin problems in dogs, your veterinarian is the best first step. This guide explains what owners commonly see and what to do next. It does not diagnose or prescribe.
Skin problems in dogs are among the most common reasons for vet visits. Itching, scratching and biting, red or bumpy skin, hair loss, scabs, a greasy coat, dandruff, and a yeasty smell all point to skin that is irritated, infected or reacting to something.
If your dog is constantly scratching and biting himself, the usual culprits are fleas, allergies, mites, and bacterial or yeast infections that follow the scratching. This guide helps you sort out what you are seeing, what you can safely do at home, and when a vet needs to look.
Important: See a vet soon for open sores, oozing or spreading red patches, hair loss with crusts, a strong smell, skin problems with fever or lethargy, or itching that stops your dog sleeping. Some causes, such as sarcoptic mange and ringworm, can spread to people and other pets.
What Skin Problems in Dogs Usually Are
Itch Is the Most Common Sign
Itchy skin (pruritus) leads to scratching, licking, chewing paws, rubbing the face, and scooting. The damage from scratching often causes a second problem, such as infection.
Starting Cause vs Secondary Infection
Allergies, fleas or mites are often the starting point. Bacteria and yeast then take hold in damaged skin. See pyoderma in dogs.
Coat and Skin Changes
Dandruff, greasy coat, dull fur, smelly skin and ears, and patchy hair loss can come from allergies, hormones, diet, or infections.
Signs of Skin Problems in Dogs
Scratching and Biting
Constant scratching, chewing feet, licking the belly or legs, and rubbing on furniture.
Red, Bumpy or Scabby Skin
Rashes, pimples, crusts, circular scaly rings, and raw patches.
Hot Spots
Wet, red, painful patches that appear in hours. See hot spots on dogs.
Smell, Grease and Dandruff
A musty or yeasty smell, greasy fur, flakes, and dark, thickened skin in skin folds or armpits.
Common Causes of Itchy Skin in Dogs
Fleas
Even a few flea bites can cause intense itching in allergic dogs, often over the lower back and tail. Use a flea comb to check. See dog parasites.
Environmental Allergies
Pollen, dust mites and molds cause seasonal or year-round itch of the paws, face, ears, belly and armpits.
Food Allergies
Year-round itch, ear infections and sometimes soft stool. See dog food allergies.
Mites
Sarcoptic mange (very itchy and contagious) and demodex mites (often in puppies) cause hair loss and crusts. A vet confirms with skin scrapings.
Yeast and Bacteria
Malassezia yeast causes greasy, smelly, dark skin. Bacteria cause pimples and crusts. Both usually follow another problem.
Dry Skin, Hormones and Ringworm
Dry winter air, thyroid or adrenal disease, and ringworm (a fungus that can spread to people) also cause skin changes.
Safe Home Care for Itchy Skin
Check for Fleas
Comb over a white towel. Black specks that turn red when wet are flea dirt. Your vet can recommend safe flea control for every pet in the house.
Gentle Bathing
A lukewarm bath with a mild dog shampoo can soothe itchy skin. Do not use human shampoo, and dry your dog well afterward.
Stop the Damage
A soft cone or a T-shirt stops licking and chewing while skin heals. Keep nails short.
What To Feed Dogs With Itchy Skin
A complete, balanced diet with omega-3 fatty acids supports skin. If your vet suspects food allergy, a strict food trial is the way to test it. See homemade dog food.
What To Do Tonight
Mild itch
Occasional scratching, no sores, normal skin: check for fleas, bathe gently, and book a vet visit if it continues for more than a week or two.
See a vet soon
Open or oozing sores, spreading redness, hair loss with crusts, a strong smell, or a dog that cannot settle for itching.
Related products
Sea salt saline spray for cleaning minor skin irritations and small wounds. Deep, bleeding, bite or infected wounds need a vet.
View product →
HomeoPet drops listed for seasonal itch, scratching and chewing. Itch with sores, hair loss or a smell needs a vet check.
View product →
Coat Rescue (HomeoPet) is listed for a greasy or flaky coat, dandruff, and smelly skin and ears. It is not a treatment for raw, oozing patches; those need a vet.
View product →Free shipping on orders $75+. Prices and stock update automatically. Products are listed for education; medicines are used only when a veterinarian directs care. This page does not diagnose or prescribe.
Related Dog Health Guides
Back to Dog Health Guides →Skin Problems in Dogs FAQ
Why is my dog constantly scratching and biting himself?
Fleas and allergies are the most common causes, followed by mites and skin infections. A vet can find the cause with a skin exam and simple tests.
Why does my dog have itchy skin but no fleas?
Environmental or food allergies, mites, yeast, bacterial infection and dry skin can all cause itching without fleas. Flea allergy can also flare from bites you never see.
What is a good dog itchy skin home remedy?
A gentle bath with a mild dog shampoo, a cone to stop licking, flea control, and a complete diet. Avoid essential oils and human creams. If itching continues, see your vet.
What should I feed a dog with itchy skin?
A complete and balanced diet, ideally with omega-3 fatty acids. If food allergy is suspected, your vet will guide a food trial with a single new protein or a special diet.
Can dog skin problems spread to people?
A few can, including sarcoptic mange and ringworm. Wash your hands after handling your dog and see your vet for a diagnosis.
Is this skin problems in dogs guide a substitute for a vet visit?
No. It is educational only. Your veterinarian should examine your dog and guide any diagnosis and treatment.
Can I work out a medicine dose from this page?
No. Never work out doses from product strengths, other pets’ medicines or internet pages. The right medicine and dose depend on your dog’s weight, age, breed, health and other medicines, so they must come from your veterinarian.