developed within days a sudden "spray of hyperpigmentation" on right side of body. started where leg meets hip, spread around the my backside, stopping in the middle. never crossed to left side of body. smaller patch is slowly starting to go down the inside of right leg. this occurred within days about 6 months ago. has not gone away or gotten lighter. freckle/mole like color with no itching, but looks bad. i am concerned because the exact spot it started on, i believe a had a mole.