Sleep Disorders: A Complete Overview
A complete overview of sleep conditions — what they are, how they differ, and what to do when sleep problems become a disorder.
Sleep disorders are medical conditions that consistently disrupt the quality, timing, or duration of sleep — and by extension, your daytime functioning. They range from insomnia and sleep apnea to narcolepsy and parasomnias. According to the American Academy of Sleep Medicine, more than 70 million Americans are affected by a sleep disorder.
This section provides a foundation for understanding the full landscape of sleep disorders. Whether you are researching your own symptoms or supporting a loved one, the guides below will help you make sense of what the science says.
Explore related topics: types of sleep disorders, common symptoms, how sleep disorders are diagnosed, and treatment options.
All Guides in This Section
A clear, comprehensive explanation of what qualifies as a sleep disorder and why it matters.
An overview of insomnia, sleep apnea, RLS, narcolepsy, and more.
From heart disease to cognitive decline — the wide-ranging impact of disordered sleep.
Understanding frequency, duration, and daytime impairment criteria.
Key warning signs that it's time to talk to a doctor about your sleep.
How to tell whether your sleep struggles are situational or chronic.
The ICSD framework — insomnia, breathing disorders, hypersomnolence, circadian disorders, and more.
Why getting a diagnosis matters: dementia risk, heart disease, and other long-term consequences.