I have a very small bump on skin, on leg/ shin halfway between knee and ankle. Not a bite, not a wart, not a scab, not rough, not red ,not dark, not hot, not sore, not a freckle, not an ingrown hair. Been there for several months, not getting bigger. About the size of couple of pinheads. Short of going to dermatologist, anything to apply to it to get rid of? Wart removal compound?