Underarm pimples that hurt when touched are generally considered to be manifestations of boils, folliculitis or herpes zoster.
1. Boil: a purulent inflammatory reaction in the deep part of the hair follicle and the surrounding tissues, often manifested as a red, swollen nodule with a pus head in the center, accompanied by tenderness and other symptoms.
2. Folliculitis: friction, scratching and other reasons damage the barrier function of the underarm skin, easy to be invaded by Staphylococcus aureus, Staphylococcus epidermidis and other pathogenic bacteria infection, causing folliculitis, localized pimple-like pimples, and the symptom of pain when touched.
3. Herpes zoster: under the influence of various factors such as overexertion, rain, staying up late, the function of the body’s immune system decreases, herpes zoster virus breeding, reproduction, resulting in herpes zoster, manifested as localized pimples, the symptoms of pain when touched.
Underarm pimples hurt when touched may also be mosquito bites, contact dermatitis and other causes, if the symptoms can not be relieved for a long time, it is recommended to go to the hospital to clarify the cause of the disease, under the guidance of a professional doctor for treatment.