Hi Thanks for your query. Lumps and bumps can appear for a variety of reasons. It may be a buildup of dead skin cells, or keratin which forms a cyst, or it could be an overproduction of cells forming a mole, skin tag or keloid scar. Some people can be more prone to developing skin growths because of a genetic predisposition. There are various different types of treatments for removal of an unwanted lump or bump. Depending on your condition, suitable treatment can be suggested to you by a dermatologist. The treatment options include surgical excision, cryotherapy, laser removal, hyfrecation and various medications. To know treatment options most suitable to you, make an appointment with nearest dermatologist today.