Painful and swollen pimples on the chin area may be caused by inflammatory folliculitis, a special type of acne caused by bacterial infection. This is an inflammatory infection caused by a large amount of bacteria inside the hair follicle after the follicle opening has been blocked. The process of bacterial growth and metabolism stimulates the surrounding cells and tissues, resulting in septic changes, swelling, and painful stimulation of receptors. If you want to improve the symptoms, it is best to choose to reduce staying up late, do not eat pepper, eat less sweets and then you can choose to take oral minocycline or doxycycline, after the local application of iodophor solution disinfection with mupirocin cream or fusidic acid cream for treatment, for the chin acne receding effect is good.