Ear acne may be caused by the exuberant secretion of sebaceous glands and lack of attention to ear hygiene. If you are more fond of eating oily and high sugar foods in your daily life, it may cause the sebaceous glands to secrete vigorously, which will lead to the appearance of pimples. It can be treated by topical application of retinoic acid and so on. If you don’t pay attention to ear hygiene, or work in a dusty and polluted environment, it is easy to cause the hair follicles to show symptoms of blockage, which leads to acne, and it is recommended to improve one’s own living habits as well as living environment. If you have serious ear acne, you should go to the hospital in time and follow the doctor’s instructions for reasonable treatment.