[Tired children and school]

Fatigue is a commonly observed symptom in school environments. Its clinical diagnosis is established based on symptomatology, which varies depending on the age. At school, daily rhythm disorders followed by breakdowns are common causes of school fatigue, requiring adequate corrective measures. Organic causes of school fatigue are uncommon in school environments. They are mostly infectious and suggest in rare occasions a severe condition. Detecting fatigue requires a thorough anamnestic investigation, which most of the time enables to identify the factors responsible for asthenia and suggest correctives measures. Chronic fatigue syndrome affects first and foremost teenagers and its pathophysiological assessment can lead to a better understanding of lasting fatigue in children.