I find that my symptoms show early in the morning, 1-9 AM. I wake up usually every morning at 2, sweaty, dying of thirst, and just plain ugh. Lying down for long periods is crap. What irritates me, is that I could just be sitting in class when symptoms strike. I'm not doing anything strenuous, just sitting. Symptoms make fun activities like choir a pain. Not to mention, the nausea... I was diagnosed with anxiety when I was really young, and I never know if I'm anxious, or if it's stupid Dysautonomia!