If the patient has pimples behind the ear, it is recommended that the patient go to the hospital as soon as possible. There are many treatments for acne vulgaris, and external drugs can be selected for treatment, such as benzoyl peroxide, tretinoin, or clindamycin gel. When patients have severe inflammation, they can also choose oral antibiotics for treatment. Doxycycline and minocycline are commonly used. In addition, oral isotretinoin also has a certain effect on acne vulgaris. Physical therapy, such as red and blue light irradiation, or skin rejuvenation treatment with more fruit acid or salicylic acid, also has a good effect on acne vulgaris. Use a acne squeezer to squeeze out the contents of acne, which can also be used for patients with more rashes. If there are skin rashes all over the body, such as acne, papules, cysts, nodules, etc. on the face, chest, back, shoulder, then the possibility of common acne should be considered.