Can you give a little more information - What was the cause of the keloid (trauma, infection, excision of a lesion, lacerations, etc)? Are there any other sites of the body that had cuts that required stitches that formed or did not form keloids? Have there been prior treatments of this keloid and what were they? Most keloids require multimodality approach to include excision, kenalog injections, compression, silicone sheeting (beneath the compression garment), and rarely radiation treatments (although I would hesitate to do this on a teenager). Seek out a board certified plastic surgeon with experience in treatment of keloid and traumatic scars or an expert in burn wounds (since many of these patients will form keloids).