Hi, I have brown spots that appeared overnight. They are on my hands (between thumb and index finger) and some on my abdomen. They are flat, don t itch, or hurt. They are just ugly on the hands. I m 18, so I removed aging/liver spots out of the equation. Also went to the doctor and said I didn t have to worry about it. He thinks it s from having lime/lemon on the areas and then going out to the sun. It s been about 2 weeks and I want these spots to be gone!