Acne in cats is usually associated with allergies, bacterial, mite and fungal or yeast infections, and sometimes with metabolic diseases that affect the cat’s immune system.
Acne can appear initially as blackheads, usually on the chin or around the lips. It can progress to pustules that are filled with blood and pus.
Depending on the age and health status of the cat, some diagnostics may be required. These may include a skin scraping to look for mites and yeast, a fungal culture to look for ringworm, or a blood test to look for generalized infection or immune problems. Sometimes allergy testing is needed.
Treatment depends on the severity of the acne. Sometimes the acne is so mild no treatment is needed. Other times it is so severe that aggressive treatment is needed. Treating any underlying causes such as diabetes is important.