I have a strange skin discoloration at my tailbone....any alarms? (photo)

I am not sure how long it has been there, and obviously it's in a hard to see area. But I had my spouse take a little snapshot of it. The skin looks discolored and a little rougher than the surrounding skin. Should I be worried? I am pretty active in extreme sports so I can rule out the possibility of a scar. Thanks for the help.

No doctor answers yet