Purplish bruising/ irritation on penis shaft

I occasionally expierence bruising and irritation on my penis.  It comes and goes. The irritation is more of an itching. Any thoughts?

Here's a photo.  https://files.me.com/gabriszeski/3vv4j7

[gracefromHHP]

our read before posting post is located under the "special announcements" tab on the forum.  Please read the post to understand the rules of posting here including why we don't look at pictures here.

we can't even begin to know what is going on. you need to be seen when you have symptoms and get a proper diagnosis from a medical professional.

grace