I get checked out a lot.
Because my skin is very fair, I burn very easily and get quite a few skin cancers. So I go to my doctors just down the road about every three months, and she burns off any that she finds.
A couple of months ago I had one cut out of my right arm, five stitches I got.

I make an appointment at the Skin Cancer Clinic once a year at least, and drive the 1.5 hour distance. They do the full body check.

Trick is, to get rid of the earlier types of skin cancers before they turn into melanoma.