After waking up this morning my wife noticed a brown mark on my cheek, the mark also has a little bit of purple in it. The spot has no pain and does not itch. I was a construction worker for many year and spent most of my days in the sun with no skin protection. I have now been in doors for two years so I am not sure if this could be a sun spot that is just randomly showing up now, or something else. Got any clues as to what it may be?