I have noticed that, going back a couple of years, when I have been in the sun, or when I have put fake tan on my face, there is a small area on my cheek that becomes like a pale freckle, darker than the rest of my face. I have now noticed a small dark dot, not even the size of a pin head, that feels like a scab, in this area of skin. I can pick it off but it bleeds and comes back again, feels like a scab but I have done nothing to cause a scab to form. Could it be anything serious?