A couple of weeks ago and just after sex, i noticed that the head of my penis had a dark red mark on it (almost like a bruise)
Over the next day or so, the redness faded and left me with this white scaly type patch.
It doesn't itch and it isn't sore but has been there for a couple of weeks.
I have stopped using soap to wash it and just use warm clean water and pat dry, but nothing is cleaning it up.
Can anyone help with what if might be?

