If you have a pimple on your ear, it is possible that there is an inflammatory reaction in the skin of the area. The most common type of inflammatory reaction is probably folliculitis. Of course, when folliculitis occurs, it may cause localized redness, swelling, heat, and pain, and sometimes it may also be accompanied by certain purulent manifestations. In addition, there may be sebaceous cysts in the area, when the sebaceous cysts secondary infection, will also produce a local inflammatory reaction, so that the acne. The area may also be formed by viral infection, such as infectious molluscum contagiosum due to infection with the molluscum contagiosum virus, which can also produce certain pimples. This kind of pimples will also have certain inflammatory manifestations if there is a secondary bacterial infection. In addition, it can also be caused by herpes virus infection, such as herpes simplex, which may also appear after the appearance of local erythema based on blisters.