Narcolepsy Explained: How It’s Diagnosed & Treated Effectively Narcolepsy is a long-term neurological sleep disorder that disrupts the brain’s ability to regulate sleep and wakefulness, leading to intense daytime sleepiness and sudden sleep attacks. Individuals may also experience cataplexy (short episodes of muscle loss triggered by laughter or emotions), sleep paralysis, hallucinations, and fragmented nighttime sleep. Accurate diagnosis involves...