OP, idk if you'll see this, but the part about GI issues after being on Accutane concerned me a bit. There's some evidence that Accutane can cause short-term symptoms that mimic autoimmune disorders and long-term symptoms that are bona fide autoimmune disorders. If you only feel "normal" while sticking to a restrictive diet, especially in the absence of confirmed celiac disease (which would otherwise explain issues with gluten), you might be suffering from a more serious problem without realizing it.

Signed, someone who only feels "normal" while sticking to a restrictive diet... and therefore is seeing their gastro next week to discuss switching to a different Crohn's treatment :P