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Hypersomnia

MONDO:0005466

A sleep disorder characterized by excessive sleepiness.

Also known as: hypersomnia, hypersomnia (disease)

78 clinical trials for this condition and its sub-types, 24 tagged with Hypersomnia itself.

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Where it sits in the disease tree

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Part of

↑ Sleep-wake disorder (1052)

Sub-types of Hypersomnia

Idiopathic hypersomnia 28 trials
2 sub-types
- Idiopathic hypersomnia with long sleep time 0 trials
- Idiopathic hypersomnia without long sleep time 0 trials

Including sub-types (78) Tagged with Hypersomnia (24)

Trials to join now! 5 Not yet finished but already full! 2 Completed 16 Terminated 1

Can a wakefulness drug help Early-Morning workers stay alert?

Symptom relief Stopped early

This study tested whether the drug solriamfetol (Sunosi) can reduce excessive sleepiness in people who start work between 3 and 6 AM. The trial planned to enroll 84 participants but was terminated early. Researchers measured sleepiness using a test that tracks how long people can…

Phase 4 • Sponsor: Charles A. Czeisler, PhD, MD • Aim: Symptom relief

Last updated Jun 27, 2026 07:51 UTC