<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi doctor, Ive noticed a skin lesion on my arm and my nails are looking irregular, what could be the problem?  <response>: You might be suffering from a Hemangioma, which is a type of abnormal growth in the blood vessels that can occur in the skin or other organs. The skin lesion and nail problems youre describing could be a result of this condition. 