I would say to start a food and drink diary . Also, see a neurologist that specializes in rare diseases. Dysautonomia is a rare neurological disease, in fact, some migraines are neurological. Your daughter can have the two problems playing against her. I recommend to see a rare disease specialist. A learning/teaching hospital is the best to go to.
DX: Wegener's Disease, Migraines, Diabetese Type II, PCOS, Lactose Intolerant, Benign Heart Murmer, Depression, Asthma, Asperger's Syndrome, Necrotizing Gramultous Inflamation in eye, A.D.D., Acid Reflux
Medications: CellCept, Prednisone, Tri Nessa, Percocet, Metformin, Prilosec, Protonix, Zantac, Advair, Cingulair, Albuterol, Calcium + Vitamin D