The "climb high-sleep low" issue has been discussed here before. Harvey Lankford, our forum's resident alpine doctor,
weighs in helpfully here: http://www.whitneyzone.com/wz/ubbthreads.php/topics/12687/Climb_high_-_sleep_low_(_or_is

It looks to me like your problems might be caused by gaining altitude from unacclimated condition too quickly, mixed with sometimes sleeping too low (i.e., Lone Pine). In every case, you slept night one at over 10,000 ft. I've had great success sleeping multiple nights (3 or more) in the 8-9,000 range, then sleeping higher at elevations like Trail Camp (12k). I've never had any altitude issues using this approach on Whitney in my various summit attempts. Not everyone has the luxury of that many nights to acclimate, but it really helps.

Last edited by Dave F; 09/28/18 03:55 PM.