Originally Posted By: valas
another summited, but was quite disoriented, spacing out from time to time, and made us all worry.

Originally Posted By: saltydog
Second climber "disoriented, spacing out", different story, possibly was more serious than "mild AMS". I would look up the signs and symptomology of HACE (high altitude cerebral edema) and compare to your climber's condition and experience. Don't know whether any medical follow-up is indicated now, but others on this board will.

Could be hypoglycemia, or hypothermia, or perhaps simple exhaustion. Yes, HACE is a possibility although quite rare at moderate altitude of Whitney. Not enough information on this possible case of AMS or its complications. Does anyone know if anyone went missing or needed evacuation?