Based on my experiences at Cirque Peak and elsewhere...
1. Headache and over exertion...If I am not careful and over exert, I have AMS problems, even when dosing Diamox. This has happened twice at Cirque Peak. Usually, it is lack of appetite which cause either light eating at dinner or bypassing dinner. Rarely do I end up with a headache.
2. Vomiting...I guess you could descend but I have not. Generally, I feel much better afterwards. I have vomited as low as Whitney Portal after drinking a few glasses of wine, I have since stopped drinking at my high elevation starting points, I do ok once I've been out a couple of days.
3. Constructive criticism, etc...See above.
A friend and I had mild cases of food poisoning a few years ago in the backcountry a few years ago...it was no stinking fun. It was much different feeling than AMS.
