Scars? Heck, skin cancer can easily turn into other types of cancer once it metastasizes. My paternal grandma died of a brain tumor that started as skin cancer. One of my parents’ friends has cancer of the lymph nodes – and yes, it started out as skin cancer.
I had this teeny tiny mole that had been mentally bugging me for years. I would even wake up in the middle of the night to find myself scratching it. Then one day last year I looked at it and saw it had gotten slightly darker. By the end of the week it had gone from light brown to dark brown. I was on vacation otherwise I would’ve been in that same day. I went, got it removed, results came back – it wasn’t cancerous, yet, but in another two months they said it would’ve been, if not sooner. I was 35 and just barely avoided getting cancer. And I don’t even try to tan because I don’t tan, I burn. So I stay pale all the time.