Several months ago I posted about my adult son having severe skin problems and his dermatologist thought it might be metastatic crohns. She sent her report to his GI doctor. After much research, the GI doctor believes this is a case of Sterile Absess Syndrome. His doctor is changing his meds from Cimzia to Entyvio. I looked this drug up and it seems it is fairly recent. 2014? Does anyone here know anything about it and is it effective and expensive? Appreciate any and all comments!