Armpit mainly refers to the armpit, the armpit grows a small grain of flesh, many are symptoms of molluscum contagiosum, filiform warts or suppurative granuloma, need to be treated for different causes of the disease, the treatment usually have physical therapy and surgical treatment. 1. Molluscum contagiosum is a benign skin growth that occurs in middle-aged and elderly people, and there are more female patients than male. Molluscum contagiosum has no effect on the body and is not contagious, so it can usually be removed without treatment or by physical methods such as laser, electrocautery or cryotherapy. 2. Filiform warts are caused by human papillomavirus infection, occurring in the neck, armpits and groin, obese or diabetic patients are prone to appear. 3. The cause of hidradenitis suppurativa is not completely clear, mainly related to skin trauma. The most important thing to remember is that the warts can be removed by laser, electrocautery, or cryotherapy. The above medical procedures should be performed by a doctor in a specialized institution.