Our route (Sirimon) is designed to allow good time for acclimatisation but for some reason, out of a group of 11 people, I was the only person who really struggled. (Although we met individuals in other groups who were ill).
I felt sick and had no energy after about 3300m. On the day before the summit, the guides decided I should accompany the group up to the col at about 4000m (I think) then drop back down again and spend the rest of the day acclimatising. On the final day, I had a shorter steeper climb than the rest of the group and I really didn't think I'd be able to do it, but we all met up at the summit - big hugs all round!
I've been home since Sunday and I still have a slightly tight chest and a cough. Although I think I have had some sort of altitude sickness or Acute Mountain Sickness, I wonder if I also have a slight chest infection, as surely the symptoms would've passed by now?
Hopefully I'll get round to putting the photos and a trip report on my blog in the next few days.