Despite their reputation as fastidious groomers, cats are susceptible to a variety of skin conditions. Cat skin disease can result from infectious causes, such as skin mites; allergies, such as flea allergy dermatitis; or more obscure conditions, such as psychogenic alopecia.
While skin conditions in cats can range from straightforward to complex, they tend to have one thing in common: They can be a chronic source of discomfort for both cat and cat parent.
Risk Factors for Skin Conditions in Cats
Kittens' immune systems take time to develop, making them more vulnerable to common infectious causes of skin disease, such as ringworm or mites. As your kitten grows into adulthood, they may develop allergies, which can lead to dermatitis (inflamed, irritated skin) or a more advanced allergic condition called eosinophilic granuloma complex (a pattern of skin reactions associated with specific lesions). Cats of all ages can also experience skin conditions in response to environmental stressors, such as changes in household members.
Infections, allergies and environmental stressors can all weaken the integrity of your cat's skin — their largest organ — and make it more susceptible to illness or disease.
Generally speaking, young cats, senior cats and outdoor cats are at higher risk for developing skin conditions. Hormones associated with intact (not neutered) male cats are also linked to some skin conditions, and certain breeds are more likely to develop skin diseases that share a genetic link.

Signs of Skin Conditions in Cats
You may notice changes in your cat's skin or fur during routine petting at home. Here are some signs of cat skin issues to look out for:
- Flaky skin (dandruff)
- Greasy skin
- Hair loss (alopecia)
- Sores, bumps or growths
- Scabbing
- Inflamed or thick patches of skin
- A dirty-looking chin (like it has specks of dirt on it)
- Red bumps or ulcers on the lips
- A dark substance in the ears accompanied by head shaking or scratching
- Scratching or biting at the skin
If you notice any of these signs, consult your veterinarian for advice. They can help you identify the cause of your cat's skin problems and suggest a treatment plan.
Common Cat Skin Diseases
While your veterinarian will provide a diagnosis (likely after running some tests), here is some information about the more common skin conditions in cats so you can stay informed. Keep in mind that this list isn't comprehensive. Again, any skin lump, bump, or texture or color abnormality warrants a veterinarian's attention.
Flea Allergy
Fleas can irritate all cats, but cats who are allergic to flea saliva are highly sensitive to flea bites. If your cat has a flea allergy, a single bite can trigger a reaction, leading to skin infections (red, oozing lesions), dermatitis (raised, itchy bumps) and hair loss. Cats with flea allergies often bite, chew and scratch themselves compulsively, particularly at the base of the tail and around the neck.
Feline Acne
If your cat's chin suddenly looks dirty or if you notice red bumps on their chin or lips, feline acne might be to blame. Feline acne isn't typically a serious condition, but it still warrants a veterinarian's medical attention. Using medicated grooming pads or gels and making simple lifestyle changes, such as switching to stainless steel dishes or cleaning feeding dishes more frequently, can help alleviate breakouts. For more severe cases, your veterinarian may prescribe oral or topical antibiotics.
Superficial Pyoderma
Superficial pyoderma is an umbrella term for a skin infection that affects the skin's top layer. It can have many causes and is often a secondary infection. Common signs include hair loss and red, moist, tender, scaly or itchy skin. If this condition progresses, it can spread to the skin's deeper layers, referred to as "deep pyoderma." Consult with your veterinarian to identify the best treatment and possible prevention.
