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Lake Louise Score

Published on June 5, 2024 at 8:00 / Updated on June 21, 2024 at 8:00

The Lake Louise score is a self-assessment questionnaire that is used to determine the severity of acute mountain sickness (AMS) in adults. An individual has AMS if they fulfill the following criteria:

  1. A recent gain in altitude
  2. Presence of a headache
  3. Presence of at least one other symptom listed below
  4. A total symptom score of 3 or more

Add the individual scores for each symptom for your total score. If your total score is:

  • 3 to 5: mild AMS
  • 6 or higher: severe AMS
  Date :
Altitude :
Date :
Altitude :
Date :
Altitude :
HeadacheNo headache0   
Mild headach1   
Moderate headache2   
Severe incapacitating headache3   
Gastrointestinal symptoms None or good appetite0   
Poor appetite or nause1   
Moderate nausea or vomiting2   
Severe nausea or vomiting3   
Fatigue and weaknessNot tired or weak0   
Mild fatigue / weakness1   
Moderate fatigue / weakness2   
Severe fatigue / weakness3   
Dizziness or lightheadedness None0   
Severe, incapacitatin3   
Difficulty sleepingSlept as well as usual0   
Did not sleep as well as usual1   
Woke many times, poor night's sleep2   
Could not sleep at all3   
Total score :    
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