I would firstly purchase a tube of Canesten cream. Apply it on your butt and see if that improves.
Is it red around that area?
You could very well have a fissure....they can be painful, but when they're small they can feel a bit itchy.
Did your GI take a look at your butt?
Have you?
The other thing...it could be what you wash with....what have you been using?
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