My daughter was like this 20 years ago. She had type 1 diabetes, an autoimmune disorder, as well as an early diagnosis of lupus. First doctor seemed to dismiss the situation as psychological. We finally got help and turned out she had 1) gastritis 2) yeast throughout her upper GI and 3) celiac. Due to all that she gave up gluten (of course) and dairy (was able to get back on that).

I think we had more help from a functional medicine doctor to be honest.

None of this may be relevant but sharing our experience!