Thanks for the question.In direct answer to your question : It is possible that your cat is suffering from a condition called Cat Acne. This typically occurs under the chin and can sometimes produce quite dramatic looking lesions. It is rarely a serious condition though.Feline Acne is a relatively common disease and mainly occurs in the chin area though in some cases it can affect the upper and lower lips as well. The main signs that you see are blackheads and spots and abscesses, while this condition is ugly to look at it rarely affects the cat. This condition occurs in all ages of cats, and is generally regarded as a trivial disease although the odd case may be secondary to immunosuppression.Here is a link to a photo I took at my clinic of this condition : LINK
Mild cases may actually require no treatment except perhaps a cleansing shampoo. More severe case would benefit from an antibacterial/anti-malassezia wash once a week, and very severe cases where there is a deep pyoderma [ skin infection ] may be put on a course of antibiotics in addition to the wash.
This is a condition which responds well to treatment but recurrence is likely in some cases.
thank you so much, it is a relief to know its not anything serious.
one more question...how will I know if its infected and in need of antibiotics? he and I would like to avoid the car ride into the vet office...he throws up and loses a lot of fur when he goes on a road trip!