Underarm acne is usually considered to be folliculitis, contact dermatitis, common warts, herpes zoster and other diseases, and antibiotic ointment, glucocorticoid ointment, antiviral ointment and so on can be selected according to the cause of the disease to be treated. 1. Folliculitis: an inflammatory skin disease caused by bacterial infection of the hair follicle and its surrounding tissues, which may appear as inflammatory pimples with pain. Under the guidance of a physician, mupirocin ointment can be used for local application, and when the symptoms are serious, oral cephalosporin antibiotics and other drugs can be prescribed to fight infection. 2. Contact dermatitis: due to contact with allergens caused by contact with the site of erythema, papules, can lead to underarm acne with itching. You can use dexamethasone acetate cream, budesonide cream and other glucocorticoid creams under the guidance of a physician, and you can also follow the doctor’s instructions for oral antihistamine drugs such as levocetirizine and other anti-itching treatment. 3. common warts: often caused by infection with human papilloma virus, can be used under the guidance of a physician 5% imiquimod cream, retinoic acid ointment, salicylic acid ointment and other drugs, can also be prescribed joint application of laser, freezing, excision, scraping and other ways to treat. 4. Herpes zoster: caused by the reactivation of varicella-zoster virus in the body, herpes with pain in the armpits can occur. Can be used under the guidance of the physician topical acyclovir cream, at the same time with oral acyclovir tablets and other antiviral drugs, pain can be under the guidance of the doctor oral pain medication, nutritive nerve medication. Underarm acne may also be caused by other diseases, it is recommended that patients go to the hospital in a timely manner, after a clear diagnosis of treatment, do not abuse the drug.