Laryngomalacia synonyms

Laryngomalacia is most commonly referred to by its clinical name, though it is occasionally historically documented as congenital laryngeal stridor. As the most frequent cause of infant stridor, it is officially classified under ICD-10 code Q31.5 and is recognized globally by this singular, descriptive term in modern medical literature.

What are the common synonyms and historical names for Laryngomalacia?

While Laryngomalacia is the standard medical term used by pediatric otolaryngologists today, you may encounter older or descriptive terms in medical records or historical texts. Historically, the condition was frequently termed "congenital laryngeal stridor" because the primary clinical manifestation is a high-pitched sound (stridor) present at birth. Other outdated or descriptive synonyms include "soft larynx," "congenital flaccidity of the larynx," or "epiglottic prolapse," reflecting the structural nature of the condition where the laryngeal tissues are unusually floppy and collapse inward during inhalation.

Why does Laryngomalacia have multiple names?

The variety of names for Laryngomalacia stems from the evolution of clinical diagnosis. Before the widespread use of flexible fiberoptic laryngoscopy, doctors relied solely on the sound of the infant's breathing, leading to descriptive names like "congenital laryngeal stridor." As imaging technology improved, the term Laryngomalacia—derived from the Greek larynx and Latin malacia (softening)—became the preferred term because it accurately identifies the underlying anatomical pathology rather than just the audible symptom.

How is Laryngomalacia classified in medical systems?

Medical professionals and coding systems use specific identifiers to ensure consistency in care for Laryngomalacia. The following classifications are standard:

• ICD-10-CM: Q31.5 (Congenital laryngomalacia).


• Orphanet: ORPHA:53664 (Laryngomalacia).


• OMIM: While not a single-gene disorder, it is referenced in clinical studies regarding airway development.

Next steps

• Consult a pediatric otolaryngologist (ENT) to confirm a diagnosis of Laryngomalacia via direct visualization.


• Monitor your infant for "red flag" symptoms such as difficulty feeding, poor weight gain, or chest wall retractions.


• Connect with the Laryngomalacia community on DiseaseMaps.org to share experiences with other families.

Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment.

References

• Orphanet: Rare Disease Database (ORPHA:53664).


• NIH Genetic and Rare Diseases Information Center (GARD).


• ICD-10 Version: 2019 (World Health Organization).


• American Academy of Otolaryngology–Head and Neck Surgery (AAO-HNS).