Stridor is not a diagnosis but a physical sign of turbulent airflow. This type of noisy breathing occurs when there is an obstruction to breathing in (inspiratory stridor) or out (expiratory stridor) and may be present during both day and night. It is most commonly due to inflammatory conditions of the upper respiratory tract. Because an infant’s larynx is only one-third the size of an adults, stridor and airway problems are more frequent in this age group. Worsening or severe stridor is a medical emergency often requiring urgent treatment in hospital.


Swab for microscopy and culture

Nasal Rigid / Flexible Endoscopy for a detailed assessment of the inside of the nose and throat.


CT / MRI imaging