1. Plural of hypersomnia; conditions characterized by excessive daytime sleepiness or prolonged nighttime sleep despite adequate or excessive sleep duration.
Usage: Medical/clinical term; Often used in sleep medicine and neurology; Distinct from insomnia (difficulty falling or staying asleep)

Examples

• The sleep clinic diagnosed several hypersomnias in their patient population.
• Hypersomnias can significantly impact a person's ability to work and drive safely.
• Narcolepsy and idiopathic hypersomnia are two common types of hypersomnias.
• Treatment for hypersomnias may include medication, lifestyle changes, or both.
• Patients with hypersomnias often report feeling unrefreshed despite sleeping many hours.