Autoimmune atrophic gastritis

I have the same. I eat bland diet. Drink water. See Gastroenterologist. No medication just watchful diet.

I was diagnosed 4 years ago with Autoimmune Atrophic Gastritis. I had never heard of it before then. I had an endoscopy and blood tests because of epigastric pain and fatigue. That is how I was diagnosed. I suspect I had it for a longer time but was never diagnosed correctly. I was given Prilosec and used to take a lot of Tums. I never knew about my AAG until my current GI doctor discovered it.
I now get B12 shots every month. I have some digestive issues and some food intolerances which may not be related. For a long time I suffered from, and sometimes still suffer from epigastric pain. But I have it far less now. When I am getting monthly injections, I feel pretty good.
Most recently, my doctor tried switching me to shots every other month but I did not do well. My B12 dropped to just above the deficient mark but I had symptoms (fatigue, brain fog, tingly hands, dizziness). So we are going back to monthly injections.

@krv, welcome to Mayo Clinic Connect. Thank you for sharing your experience. It sounds like getting the diagnosis finally helped explain symptoms you had been living with for quite some time.

Autoimmune atrophic gastritis happens when the body’s immune system attacks the cells that make up the stomach lining. Over time, that can affect absorption of vitamin B12, so it’s not surprising that you noticed a return of fatigue, brain fog, tingling, and dizziness when your B12 injections were spaced farther apart.

You mentioned digestive issues and food intolerances. Have you found any foods or eating habits that seem to make your symptoms better or worse?

Because autoimmune gastritis can occur alongside other autoimmune conditions, have your doctors also evaluated you for any other autoimmune disorders?

@mahmudhasan and @usugar1, I’m wondering how each of you have been doing since you last posted. Have there been any changes in your symptoms or treatment?

I definitely have an intolerance for onion and onion powder. There are some other spices like Sriracha that I cannot tolerate.
My stomach doesn't feel well if I eat too much beef.
I get bloated very easily from many foods. So, occasionally I take a day to greatly reduce what I eat and to drink a lot. It seems to help.
I have hypothyroidism and I was diagnosed with that a very long time ago. I don't I think that mine is autoimmune (Hashimoto's). My hypothyroidism is very well controlled. I did have lichen planus for about a year, but it cleared up. This was years before my AAG diagnosis.