Male 27yrs old, hx of prolonged QT syndrome, 6ft, 4in, 399 lbs, spina bifida occulta, fracture of vertibra near defect with 6mm hernination and torn roto cuff of left shoulder, seizures as a child status epiliticus, seizure free since 10 yrs old. for last 7 mths has episodes of sudden tachycardia (up to 270bpm) at rest. All S/S of acute MI, yet all test neg. Monitor, echo, and stress test all neg. After the episode subside, then severe headaches and total fatigue, sleeping up to 12 hrs or more after. Pt states he thinks that he is slowly dying and no one can find out why. I am his mother, so what else should I look at. Neuro next or what? Help please some suggestions, I am an retire RN and at a lose at what else to look at.