Rare diseases · Sign or symptom
Abnormal movement during sleep
HP:5200300
What it means
Periodic Limb Movement Disorder, also known as Sleep-Related Myoclonus Syndrome or Nocturnal Myoclonus Syndrome, refers to the periodic and stereotypic movements of the legs or upper limbs during sleep.
Part of the broader category
Also called: Nocturnal myoclonus syndrome · Periodic limb movement disorder
Abnormal movement during sleep
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.