Lake Louise AMS score

Self-report questionnaire

Add together the individual scores for each symptom to get the total score.

Headache No headache 0
Mild headache 1
Moderate headache 2
Severe headache 3
Gastrointestinal symptoms None 0
Poor appetite or nausea 1
Moderate nausea &/or vomiting 2
Severe nausea &/or vomiting 3
Fatigue &/or weakness None 0
Mild fatigue/weakness 1
Moderate fatigue/weakness 2
Severe fatigue/weakness 3
Dizziness/light-headedness Not dizzy 0
Mild dizziness 1
Moderate dizziness 2
Severe dizziness 3
Difficulty sleeping Slept as well as usual 0
Did not sleep as well as usual 1
Woke many times, poor sleep 2
Could not sleep at all 3

Total score

Rise in altitude within last 3-4 days and headache and total Lake Louise score of:

  • 3-5 = mild AMS
  • 6 or more = severe AMS