Trait
Excessive sleep
A clinical phenomenon characterized by sleeping longer than what is typical or necessary for a person's age and context, or by recurrent episodes of sleep that intrude upon the waking hours. Excessive sleep is identified through self-reports or observations and may involve prolonged nighttime sleep, frequent daytime naps, or episodes of unintentional sleep.
Summary
- Also called
- Prolonged sleep duration, Sleeping too much
- Body system
- Abnormality of the nervous system
Reference genomeGRCh38hg38
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The Human Phenotype Ontology links no gene to Excessive sleep itself. The narrower traits below list theirs.
Narrower traits
Broader traits
Where this comes from
- The Human Phenotype Ontology, release 2026-09-01: the trait, its names, its definition and the genes linked to it. Find out more at hpo.jax.org.
- Data release 2026.10.16-c6eea6bf.
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