My 15yr old son had nerve damage in his left arm at birth. On 3/22/10, he received a T-Dap vaccine in that arm & 8 minutes later went totally unconscience. Since then, he experiences a racing heart, with some arrythmia, stomach & headaches, cold hands/feet, hot flashes & random pain throughout his body. He has been to a neurologist, a pediatric cardiologist, & an electrophysiologist & no one can figure out what s wrong with him. He s had numberous blood tests done as well. Thyroid, adrenal, & all basic numbers check out okay. PLEASE HELP!