Assess for mild altitude illness (see "How to Assess Altitude Illness"); if you suspect it, treat with the following steps. (If you suspect severe altitude illness, see "How to Treat Severe Altitude Illness.")
Step2
Hydrate well, especially with oral rehydration salts or diluted sports drinks. Urine should be clear and copious.
Step3
Have the person exercise lightly, and cease activities if symptoms worsen.
Step4
Administer aspirin, acetaminophen or ibuprofen to treat headaches.
Step5
Administer acetazolamide (known by the brand name of Diamox) only if the person is not allergic to sulfa drugs. Consult a physician.
Step6
Avoid alcohol, caffeine and smoking.
Step7
Avoid any medications with sedatives in them, such as sleeping pills, cold medicines and antihistamines.
Step8
Don't ascend further until symptoms improve. Descend if symptoms don't improve in two days or if the condition advances to severe altitude illness.
Tips & Warnings
Altitude illness can kill. Treat cases of mild altitude illness immediately to prevent their developing into severe altitude illness.
Descend immediately and rapidly if any of the signs and symptoms of severe altitude illness are present.
People with altitude illness suffer from impaired judgment and will need others to assess their condition and make decisions for them. Be especially careful if the afflicted person is a physician, guide or has more training or experience than you do - trust your own judgment, not hers.
This information is not intended as a substitute for professional medical advice or treatment.