<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I noticed that the appearance of my scalp has become irregular, with some raised bumps. Can you tell me what could be causing this?  <response>: It sounds like you might have a hemangioma, which is a type of benign blood vessel tumor. It can occur anywhere in the body, including the scalp, and can cause raised bumps or discoloration of the skin. 