Dear sir, Hi Thanks for posting your query on HCM. I appreciate your concern for your son s problem. I am of the opinion that it is an exaggerated response of healing referred to as Keloids. When skin is injured scar tissue forms over the wound to repair and protect the injury. In some cases, scar tissue grows excessively, forming smooth growths called keloids. Usually they are not harmful but may cause cosmetic concerns hence do not require treatment because they tend to shrink and become flatter over time even without treatment. You can apply a moisturizing cream to keep the tissue soft. If growth continues or if he gets pain or itching, you may visit a dermatologist for possible use of Corticosteroid injections to reduce inflammation Cauterization (cold) Freezing the tissue to kill skin cells Laser treatments to reduce scar tissue Hope your query is being answered. Kindly rate the answer, if you are convinced. Regards