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What is the difference between sleepiness and fatigue?

Sleepiness and fatigue are two distinct conditions. Sleepiness refers to the inability to stay awake even in situations in which wakefulness is required, such as at work or behind the wheel of a car. Fatigue is a state of overwhelming sustained exhaustion and decreased capacity for physical and mental work that is not relieved by rest. Both conditions can greatly affect your quality of life, productivity, performance and safety, and should be evaluated for underlying causes so that appropriate treatment may be prescribed.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.