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A. If your cat has black bumps or other skin lesions forming that have not cleared up with preventive flea treatment or changes in diet, it may be time to request some additional testing as needed. Your vet can take a skin scraping of one of the lesions and send it to a Lab for various tests. One test includes growing any bacteria or fungus present, and then subjecting them to various medications to find which one is best to use. Other tests just look for certain growth patterns to determine if a fungus or bacteria is present which can be treated with oral or topical medications from your vet.
Cats can commonly have chin acne, which is the formation of little bumps that can be red or black in color and may sometimes break open and ooze debris. The cause of this acne is unknown, however one theory is that cats can actually get bacterial infections from rubbing their chins on plastic food dishes or dishes that are not cleaned often. Treatment may involve anywhere from none at all in minor cases, to use of wipes, creams or antibiotics for helping clear up any infection.
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