Hi, my sister is 18 years old. Two years ago she started having stomach problems, but everyone said there was nothing wrong. Recently an allergist told her that she is allergic to all foods. She is eating burger patties and that is it. She was 130 lbs now she is 90 lbs and that was within the past 2-3 months. She just had some tests done that all came back good, however they said her esophagus is really bad due to acid reflex. She is losing her vision randomly now and gets really bad migraines. They did an MRI but nothing came up. Is there anything that you reccommend? Are there any doctors that we could take her to to get her to start living a normal life again ?