Right side of my hip down to my buttocks itches like crazy!

Anyone know why? I looked at it in the mirror and its all red from me scratching so much. Is this a rash of some kind? I'm not allergic or anything. What could this be? And what can I do to stop it?
Updates
+1 y
I should mention that I've had this for a good month now I'd say. Started small but it got a little bigger. I've been using this cream called lamisyl which stops the itching for a little bit, but I don't know if it's getting rid of the problem or not
Right side of my hip down to my buttocks itches like crazy!
Post Opinion