Hi . Personally, I would get it checked out. We're not medical experts, so we can't tell you what it might be, but you never know with these things what is going on beneath the surface. Best to be safe. Maybe you can get an annual skin check at the same. Best to be safe. Check back, if you don't mind, and let us know what you find out. I'll be thinking of you. - Lori (Team Member)