Hello,
I noticed when I get erection I have something like white powder on my penis, nothing itchy or hurting no burning sensation, and this white powder is gone when I wrinse my penis, not sure how often it comes back but I noticed this only 3 days ago or so, I don't have any discharge or anything like that, but I am not sure what this is, here are some photos maybe it would help not sure about the terms and guidelines here, please delete the photos if it's inappropriate.
http://i64.tinypic.com/29wscd3.jpg
http://i65.tinypic.com/ocimw.jpg