If you find a lump on your earlobe, the first thing to look for is whether the location of the lump has been previously pierced. If the ear has been previously pierced, the lump is most likely a keloid that has formed. When the keloid is small, local injections can be given to reduce the growth of the keloid, for example, by applying a combination of betamethasone or tretinoin injections. If there is no way to inhibit the formation of the keloid, surgical excision of the keloid should be considered, followed by local irradiation to avoid recurrence of the scar. In addition, if the earlobe has not been pierced, the lump in this location is likely to be a sebaceous cyst. If the sebaceous cyst is small, you can leave it alone, but make sure not to stimulate the area with your hands, otherwise it will easily cause infection and local pain and pus. If you want to further treat sebaceous cysts on the earlobe, most of them require surgery.