Harvey,

Thanks so much for sharing your knowledge of AMS with practical experience. I have found all your postings very informative.

I had an experience this weekend with AMS & migraines and had some questions.

Background:
I met a couple of women on the side of a trail close to 10k. One of the women was experiencing a headache. (All of us where dayhiking and lived at sea level) I suggested it might be AMS and suggested they start heading down the trail.

The woman that wasn't feeling well mentioned she gets headaches frequently and even has migraines at sea level. In fact, she had some medication for her migraines and was considering taking one of her pills. (She and her hiking partner agreed to wait 20 mins and start down if no improvement)

Questions:
Has there been any studies to indicate people that have a history of migraines are more susceptible to AMS? Would migraine meds help with AMS? I know you have stated it should be considered AMS unless proven otherwise. What would be some criteria to determine the difference between an AMS headache & a migraine? Is there a difference between AMS & migraines?

Wazzu