1.The Pilgrimage to Holy Cave of Amarnath Yathirai involves trekking at altitudes as high as 14000 feet.
2.Yatris    may    develop    High    Altitude    Sickness    with   following symptoms:  loss  of  appetite, nausea,  vomiting,  fatigue,  weakness, dizziness,   lightheadedness   and   difficulty   in   sleeping,   visual impairment,    bladder    dysfunction,    bowl    dysfunction,    loss    of coordination  of  movements,  paralysis  on  one  side  of  the  body, gradual   loss   of   consciousness   and   mental   status   changes, drowsiness,  chest  tightness,  fullness,  congestion,  fast  breathing and increased heart rate.
3. If  high  altitude  sickness  is  not  treated  timely,  it  may  be  lethal  in  a
matter of hours. Dos for prevention of High Altitude Sickness.
1. Do  prepare  for  the  Yatra by  achieving  Physical  Fitness it  is advisable  to  start  a  preparatory  Morning/  Evening  walk,  about  45 km per day, at least a month prior to the Yatra.
2. Start deep breathing exercise and Yoga, particularly pranayam for improving oxygen efficiency of the body.
3. Do check with your physician prior to travelling to higher elevations, if you have any existing pre-existing medical conditions.
4. Do walk slowly while ascending and take time to acclimatize, relax for a short while on steep inclines.
5. Do avoid exerting beyond your normal capacity.
6. Do  take  compulsory  rest  at  various  locations  and  ensure  time
logging  and  take  ideal  walking  time  mentioned  on  the  display
boards while moving towards next location.
7. Do check with your physician prior to taking any medications.
8. Do  drink  lots  of  water  to  combat  dehydration  and  headaches about 5 liters of fluid per day.
9. Do  follow  the  prescribed  food  menu available  at  Amarnath Yathirai Seva Board’s
website, amarnathyathirai.com when having food in the Yatra area.
10. Do consume plenty of carbohydrates to reduce fatigue and prevent low blood sugar levels.
11. Do bring portable oxygen with you as it is helpful in case you have difficulty in breathing.
12. Do  descend  immediately  to  a  lower  elevation,  if  you
start  having altitude illness symptoms.
13. In case there is any change in the status of your health after having obtained  Compulsory  Health  Certificate  some  weeks  earlier,  do consult your doctor before embarking on the pilgrimage.
14.In  case  of  any  signs of  high  altitude  sickness  or  any  other discomfort, immediately contact the nearest medical facility located at every 2 kms.  
Don’ts for prevention of High Altitude Illness.
1.Don’t ignore the symptoms of high altitude illness.
2.Don’t drink alcohol, caffeinated drink, or smoke.
3.Don’t  ascend  any  further  if  you  have  altitude  illness.  Instead,
descend immediately to an elevation where you can acclimatize.
4.Don’t accept everything a sick Yatri says since his/ her judgment is impaired.