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Updated: Jun 23, 2025

Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing
Published on: December 1, 2023
Laryngeal stridor in children caused by reversible metabolic disease
Farah Salman Alnemari1, Hussain Alsheef2, Zohour Awadh Almalki1
1College of Medicine and Surgery, Taif University, Taif, Saudi Arabia.
Insights
Partial biotinidase deficiency, a disorder affecting biotin recycling, can present with rare symptoms like inspiratory stridor. Early diagnosis and biotin treatment are crucial for reversing symptoms in affected children.
Area of Science:
- Biochemistry
- Genetics
- Pediatrics
Background:
- Partial biotinidase deficiency is an inherited metabolic disorder.
- It impairs the body's ability to recycle biotin, a vital vitamin.
- Untreated, it can lead to severe neurological and developmental issues.
Abstract:
We report a case of a boy in his middle childhood who presented with inspiratory stridor and lactic acidosis and was subsequently diagnosed with partial biotinidase deficiency. Fibreoptic laryngoscope showed paradoxical vocal fold mobility.Partial biotidinase deficiency is an inherited disorder in which the body is unable to recycle the vitamin biotin. It may result in clinical consequences and can be easily treated with biotin but need a high index of suspicion to diagnose. The main symptoms include ataxia, seizures, hypotonia, psychomotor retardation, alopecia, skin rash, progressive deafness, optic atrophy and life-threatening episodes of metabolic acidosis. Laryngeal stridor is an uncommon presentation, but it is reversible in case of biotinidase deficiency. Invasive procedure like tracheostomy has not been shown to enhance outcomes.
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