Hi My Son Has Crohns And Constipation Issue And Is

Hi my son has crohns and constipation issue and is special needs Rubinstein taybi symdrome
He was on remicade and that wasn't working so mean while he developed a skin tag in the butt inner lining
And he has red rash butt with bumps and the surgeon first thought herpes treatment first that didn't work then steroid cream that hasn't worked. Send us to a infectious disease doc. I am trying to help him what can I do