I have been diagnosed with Dysautonomia but i don't know if it is POTS OR NCS yet.Does anyone know what kind of tests determine which one-if not both- it is?I've done a tilt test and a heart variability test but nothing else.Doctors have prescribed Zanax,Zoloft,Ladose but nothing works.Zanax actually made it worse.I wake up in the middle of the night with breathing problems,tachycardia,numbness,nausea and shivering.Sometimes my head and neck are so numb i can't feel them at all.I also have gastric influx and i take NEXIUM.Does anyone have similar symptoms? The mornings are even worse.I feel dizzy and like i cannot concentrate-along with all the other symptoms.I live in Athens,Greece and i am worried that doctors don't know much about POTS here.Do you think i should do more tests?How can i help myself?