There may be the following reasons for acne in the ear: First, some patients have very small sebaceous cysts inside the ear, also known as small pimples or acne, this disease may be related to the patient eating spicy, stimulating food, staying up late on fire, working under more pressure, emotional tension and other factors, there are generally no symptoms in the early stage, may be the patient unintentionally found, if the local infection may be If local infection occurs, painful sensation may occur, and local formation of pus and rupture are possible. Secondly, some patients have herpes zoster infection in the auricle, especially in the auricular cavity, due to the invasion of the herpes zoster virus on the surface of the auricle, which is usually clinically manifested as severe pain. Herpes is not difficult to diagnose during the clinical examination and manifests itself as localized blister-like changes with intensive growth, which can gradually crust over and dry up after the blisters break down.