-------------------------------------------------------------- Dear Dr. Irwin, I am 20 years old and my skin in general is in a good state. Though I have noticed a big, light brown spot in my bikini zone. It's about two thumbnail sized, flat and with a slightly dry skin on it. I am not sure how long has it been there, since it is an awkward place and it doesn't hurt. What do you think could it be? it's not a spot that has been exposed to a lot of sun.