Rare diseases · Sign or symptom

Laryngeal stridor

HP:0006511

What it means

An abnormal high-pitched noisy sound, occurring during inhalation or exhalation caused by the incomplete obstruction in the throat.

The laryngeal stridor sound is usually heard during inspiratory phase, also called inspiratory stridor, and may accompanied by inspiratory difficulty in breathing. It may be due to abnormal flaccidity of the epiglottis or arytenoids.

Rare diseases that can present with this7

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Laryngeal stidor

Laryngeal stridor

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This 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.