My symptoms that have sent me to the ER are rash on chest, trouble swallowing, muscle weakness, clogged feeling in ears, dizziness, low grade fever, mild stomach pain, and a feeling like I will pass out. I have been to my Dr., but he doesn't seem hopeful about finding out what is causing this. It only happens after I eat certain meals and the symptoms begin within 30 minutes and last for 4 days (although they get better as those 4 days go on.) I don't know what else it could be besides food. I've been tested for almost everything else from thyroid to Lymes disease to lupus.