Hello...I have shaved my head and after that I found my scalp above right side earblack. I am not able to understand what is this? There is no pain or itching in the affected area. it has even covered the upper side of my ear and also the back side of my scalp.for better understanding, I am hereby attaching the image of affected area. Someone told me that it might be a skin cancer. I am very scared. Kindly suggest me what is this and how can it be cured?