1. a sleep disorder characterized by excessive daytime sleepiness or prolonged nighttime sleep despite adequate or excessive sleep duration
Usage: medical term; also called hypersomnolence

Examples

• The patient was diagnosed with hypersomnia after sleeping 12 hours per night and still feeling exhausted during the day.
• Hypersomnia can be caused by underlying conditions such as sleep apnea or narcolepsy.
• Unlike insomnia, hypersomnia involves sleeping too much rather than too little.
• Her doctor prescribed medication to help manage her hypersomnia symptoms.
• Hypersomnia often interferes with work and social activities due to persistent fatigue.
• The neurologist explained that hypersomnia differs from normal tiredness in its severity and duration.