laryngismus stridulus

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spasm of the larynx. adj., adj laryngis´mal.
laryngismus stri´dulus sudden laryngeal spasm with crowing inhalations, usually seen in children at night; called also pseudocroup.

lar·yn·gis·mus stri·d'u·lus

a spasmodic closure of the glottis, causing noisy inspiration. Compare: laryngitis stridulosa.

laryngismus stridulus

Pseudocroup Pediatrics A childhood cough with a whoop due to spasmodic laryngeal closure with crowing inspiration, a sign of tetany Clinical Cyanosis, apnea, paresthesia, tingling of hands and feet; LS is common at night, often waking Pt Lab ↓ Ca2+, normal magnesium. See Latent tetany syndrome. Cf Whooping cough.

la·ryn·gis·mus stri·du·lus

(lar'in-jiz'mŭs strid'yū-lŭs)
A spasmodic closure of the glottis, lasting a few seconds, followed by a noisy inspiration.
Compare: laryngitis stridulosa
Synonym(s): pseudocroup.