Lake Louise Score

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   
Mild1   
Moderate2   
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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