I started at the emergency room. I had many tests done. Blood work, gallbladder screening, ct scans, MRI's... nothing ever showed up. Eventually I convinced a doctor to do a biopsy of my stomach lining. The biopsy came back with eosinophils in every layer of my stomach to a very extreme concentration. The biopsy was all that was needed to confirm the diagnosis however it does not confirm the cause so additional testing is needed to determine the best course of treatment.