Hello.... my genitals, upper, inner thighs and lower buttocks have been very, very, very dark brown for almost two years now. No pain, no rash, no itching, no discomfort, no irritation. Not an STD. I'm in my 40s and am in very poor health. I'm guessing the hyper pigmentation might be due to internal bleeding that is draining in the genital area? I think I heard over the years of this happening to someone else who happened to have internal bleeding from an organ like the stomach or intestines. It drained to the person's genital area. Is this possible?