MC cause of intermittent stridor in a 10-day-old child sholy after bih is:
Laryngomalacia
Foreign body
Vocal nodule
Hyperophy of turbinate
Laryngomalacia is the most common cause of inspiratory stridor in neonates. The stridor in case of laryngomalacia is not constantly present, rather it is intermittent. So laryngomalacia is also the M/C cause of intermittent stridor in neonates.