Stridor is a harsh, high pitched respiratory sound produced by turbulent airflow that is usually inspiratory but may be biphasic; it is a sign of upper air way obstruction.
Stridor is commonly seen in sick children and is due to a number of different cause. A list of differential diagnosis of stridor is given here:
Infectious Causes
- Acute laryngotracheobronchitis
- Epiglottitis
- Pharyngitis
- Parapharyngeal abscess
- Bacterial tracheitis
- Laryngopharyngeal diptheria
- Laryngeal papillomatosis
- Extrinsic inflammatory mass compressing the trachea (e.g tuberculosis)
This list is vast and a complete history, physical examination and relevant laboratory tests help to differentiate different causes of stridor in children.
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