Which is a sleep disorder?

A sleep disorder refers to any condition that disrupts normal sleep patterns, leading to difficulties with falling asleep, staying asleep, or waking up. Common sleep disorders include insomnia, where individuals have trouble falling or staying asleep, sleep apnea, which causes interruptions in breathing during sleep, and narcolepsy, a neurological disorder that leads to excessive daytime sleepiness and sudden sleep attacks. These conditions can negatively impact health, mood, and daily functioning, requiring treatment through lifestyle changes, therapy, or medication.