If the patient has a raised red bump on the chest and it is not painful, consider that it may be caused by folliculitis or sebaceous cysts. There is also a possibility that it is a keloid, but this is mostly related to the previous existence of skin trauma in the area, which was then improperly repaired or not repaired in a timely manner. Patients can combine their situation to make a preliminary judgment: a. Folliculitis: 1. Clinical manifestations: folliculitis usually manifests itself as scattered hemispherical red papules or pustules with a lustrous surface and a red periphery, which are not painful or itchy when symptoms are mild; 2. Treatment: some mild Folliculitis can subside on its own without treatment. If it cannot subside on its own, it can be treated with antibiotics under the guidance of a doctor, such as fusidic acid cream, miconazole ointment and other drugs for external application, or oral cefuroxime, doxycycline, itraconazole and other drugs for relief. The sebaceous cysts: 1, clinical manifestations: if the patient’s chest red bumps specific performance for the volume of varying sizes, mostly round, medium hard or elastic, higher than the skin surface and smooth surface, considered sebaceous cysts, but the skin of such cysts are mostly normal color, red is less common; 2, treatment: cysts generally do not need treatment, if secondary infection leads to the body pus, pain can take surgery Treatment, incision and removal of cysts at the site of occurrence, or choose laser treatment. Clinical manifestations: usually involves the superficial layer of the epidermis or dermis of the chest skin, which can be red, painless, flat, soft, and without other abnormal sensations; 2. For larger keloids, laser, freezing, surgical excision and other methods can be used under the guidance of a doctor to remove them.