My thighs have skin discolouration. I'm fair skinned and it is dark in colour. When you touch it, you won't know there's a problem as the outer layer is just smooth like normal skin. Only when you look at it, you see a colour different from the rest of the skin. It appears like patches and i feel like it is spreading.No itching, no pain, no discomfort, no rashes or anything. Only the colour has changed. It could be called the colour of a pimple scar except there's no pimple or outer skin damage.