Underarm follicle bulge may be caused by folliculitis, sebaceous cysts and other diseases, can be treated by drugs, surgery, commonly used drugs such as mupirocin ointment. 1. Folliculitis: raised hair follicles in the armpits may be caused by folliculitis, which manifests itself as red papules centered on hair follicles, accompanied by local redness, swelling and pain, and can be treated with topical mupirocin ointment and other drugs. 2. Sebaceous cysts: raised hair follicles in the armpits may also be caused by sebaceous cysts, which are benign lesions formed by the gradual accumulation of sebum and are painful when infected, and can be surgically removed in the non-infected period. All of the above medications and treatments should be administered under a doctor’s supervision.