White spot on leg? Lost pigment?

I have this spot on my leg i say the size of a nickel, and its been there for a year and a half so far, it hasnt bother me, no pain no itching no nothing. Theres white hair growing out of it. I think it lost his pigment cause I ripped a bandaid off because i remember i had a cut there or its probably a scar. Should I be worried?