My seventeen year old daughter has been experiencing chronic nausea and frequent inexplicable vomiting since she turned thirteen. It has debilitated her to where her school work and social life are grossly affected. I'm tired of everyone dismissing it as hypochondriacal hysteria from a hormonal girl with an overly protective, indulgent single mom. It has been increasing in frequency to where it's now an everyday problem and she is in pain constantly. She has feverish flashes between being too hot or too cold. She gets worn out quickly, so much that a walk around the grocery store sends her to bed in exhaustion and pain. She has a low baseline body temperature, and migraines run in the family along with periodic arrythmia. Any ideas? We've been to the psychiatrist, the neurologist, had brain/neck MRI, EEG, (all normal), we are now engaging with a gastroenterologist (for an upper GI endoscopy and biopsies), and the endocrinologist....