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Trait

Paroxysmal lethargy

Repeated episodes of sudden-onset and transient lethargy.

HPO HP:0011973

Summary

Also called
Intermittent lack of energy
Body system
Abnormality of the nervous system

1 gene linked to Paroxysmal lethargy

Changes in these genes cause rare conditions in which Paroxysmal lethargy is seen. Most people with this trait have none of those conditions, and a gene on this list says nothing about anyone's own genome.

GeneHow often it is seenConditions
SLC2A1solute carrier family 2 member 1Not recordedIn 1 condition

How often is among people with one of the gene's conditions, the most often across them, as the Human Phenotype Ontology records it. These pages describe traits and the research behind them; they are not a diagnosis, and a doctor or genetic counsellor is the person to ask about symptoms.

Broader traits

Lethargy

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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