Underarm pimples like a pustule is generally folliculitis, you can use iodine volts for local disinfection, topical antibiotic drugs. If you do not pay attention to the hygiene of the armpits, it is easy to have bacterial infections and pustules, you can use iodine volts and other local disinfection, and usually pay attention to maintain hygiene and cleanliness. And topical antibiotic ointment, such as mupirocin ointment. If the lesions are large or recurrent, you can also take oral antibiotic drugs, such as cephalosporin, macrolide antibiotics. If underarm pustules appear, you should go to the hospital in time for examination and appropriate treatment, and the use of the above drugs should pay attention to follow the doctor’s instructions.