My son has been trying to find out what is wrong with him for five years now with no success. Recurrent symptoms are dizziness, nausea, excessive tangy odour, numbness on left side of face, & severe headaches, gout in his toes and knees, sleep apnea. He has seen a neurologist and they have ruled out ear nose and brain problems and vertigo, has a stress test and was declared ok. His doctor seems uninterested in moving forward . What might be our next course of action?