How common is it for an individual to have all of the following autoimmune disorders? Typing them in the order they were diagnosed. Vitiligo, age 15, Hashimoto's 25, Crohns 30, Anemia late 30's.
It really is not uncommon for people to have more than one AI. And low D and B12 are common too. The low B12 and anemia are connected. Many times Hashimoto and celiac go together. The constant inflammation might have triggered the Crohns (just a guess). I would encourage your dr. to do the simple blood test for celiac.
I'm not familar with vitiligo. I'm thinking it is where the skin losses it's pigment. What are the symptoms of that?