Feline acne

Feline acne affects the chin and sometimes the lips. The hair follicles there become blocked with oil and keratin, forming small black specks that look like dirt or coffee grounds. This is the mild form, and it is common. Cats of any age can get it, and many have just one episode. Causes are not fully understood. Poor grooming of the chin, stress, allergies, an oily skin type and, in some cats, plastic or dirty food bowls have all been suggested as factors.

In worse cases the chin becomes red and swollen, with pimples, pus, crusts, hair loss or bleeding. Bacteria can then infect the follicles, which is painful and itchy, and can leave scars. A cat with these signs should see a vet, as other conditions such as ringworm, mites and allergies look alike and need different treatment.

Do not squeeze the spots or use human acne products, which can irritate the skin and be unsafe if licked. A vet may clip the hair, clean the chin with a suitable product, take a skin sample and prescribe medicine if an infection is present. Many vets suggest switching to ceramic, glass or steel food bowls and washing them often. Ask your vet whether that, and a food or allergy check, is worth trying.