A sleep disorder refers to any condition that affects the quality, timing, or duration of sleep. Common types include insomnia, sleep apnea, restless leg syndrome, and narcolepsy. People with sleep disorders may experience difficulty falling asleep, staying asleep, or excessive daytime sleepiness. These conditions can lead to fatigue, mood changes, and reduced cognitive function. Sleep disorders often require medical attention, and treatment may include lifestyle changes, therapy, or medication to help improve sleep quality and overall health.
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