off and on I have itch in my pubic area, sometimes I have brown or reddish stains on my underwear, I have not been intimate with anyone in several months, I have checked and checked and there does not appear to be crabs or nits, it seems like it is more of an itch, possibly I scratch in my sleep and that is causing some slight bleeding, I am not particularly itchy, its more I am extremely dry down there, the skin all looks normal?