Sleep Disorders

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The collective term sleep disorder refers to conditions that affect sleep quality, timing, or duration and impact a person’s ability to properly function while they are awake. These disorders can contribute to other medical problems, and some may also be symptoms for underlying mental health issues.

In 1979, the American Sleep Disorders Association published the first classification system dedicated to sleep disorders. Our knowledge and understanding of sleep health has evolved over the past four decades. More than 100 specific sleep disorders have been identified and today’s classifications use complex methodologies to categorize these disorders based on causes, symptoms, physiological and psychological effects, and other criteria. However, most sleep disorders can be characterized by one or more of the following four signs:

• You have trouble falling or remaining asleep
• You find it difficult to stay awake during the day
• There are imbalances in your circadian rhythm that interfere with a healthy sleep schedule
• You are prone to unusual behaviors that disrupt your sleep

Any of these signs could indicate a sleep disorder. We encourage people who experience any of these issues to consult with their doctor.

Visit the pages below to learn more about different sleep disorders. Our list of sleep disorders is based on categories in the American Academy of Sleep Medicine’s International Classification of Sleep Disorders – Third Edition (ICSD-3).