Just like us humans, cats can have a wide variety of maladies. Even acne. With felines, this most often manifests in the chin area. Deborah writes:
Feline acne can be a difficult problem, and one best left to a good, feline-friendly veterinarian. In our experience, most vets are canine-centric and often treat cats as a sort of side line. They do their best but they often miss things that a cats-only vet would not.
Acne is an alarm that lets us know that there are too many waste products building up in the body. We are not vets and are not qualified to dispense medical advice, but our go-to resource for such information, Anitra Frazier's book The Natural Cat, has some good advice. Ms. Frazier recommends a switch to a raw food diet. If this is too difficult, she recommends double-checking ingredients on wet cat food to eliminate all choices with meat by-products, preservatives, sugar, or artificial colors.
Lucy should not be on a dry diet as kibble does not provide adequate cellular nutrition and moisture. Baby food is not a good choice, but there are some very good wet canned diets out there. We have a cat who has significant food allergies and she's done quite well on Instinct canned foods. Never give up on reading labels as the manufacturers often change their ingredients and even what they call things.
We have our food recommendations here: http://kittyhelpdesk.com/help-desk/best-cat-food-and-treats . These are good for most cats, regardless of their health issues. You just need to watch out for particular ingredients if Lucy has any allergies.
You should begin feeding Lucy a daily feline multivitamin. Nu-Cat from Vetri Science Laboratories (vetriscience.com) is a good choice and it's readily available from Amazon and other retailers. Most cats will enjoy eating Nu-Cat as a treat, but if you have difficulty getting Lucy to accept them, you can always crumble them and add them to her food.
You can keep the area of acne infection clean by using a hot compress and then gently removing any loose debris from the skin and fur. Follow this up with a bit of peroxide on a cotton ball. After it's done foaming, wash it clean and apply a solution of 1/2 cup water and 1/8 teaspoon white vinegar. Human health care products like Stridex are generally not a good idea for use on cats.
It's our NON-veterinary opinion that antibiotics and cortisone will do more harm than good in the long run. Many vets apply cortisone to every animal with any itch whatsoever. This essentially serves to mask symptoms without treating their root causes. Antibiotics can also do the same while adding new symptoms.
It's important that you put Lucy on a course of probiotics to restock her intestinal flora after the course of antibiotics has killed them. For a cat with feline acne, you want to avoid mixtures like Purina's Forti-Flora which have additives. Instead, look for Jarrow Formulas Pet Dophilus powder. Despite the odd name, this is readily available at Amazon and other pet supply retailers. Just add 1/8 teaspoon to one meal per day. You may also want to add a teaspoon of raw, canned pumpkin so the new good flora have something to eat too.
We know this is a lot of information. Just take your time and consider your choices. Remember that you are the ultimate arbiter of Lucy’s health care. If you feel your veterinarian isn’t administering the best care, there are always other vets out there.
All our best wishes for you and Lucy!