What is the cause of neonatal laryngeal sound?

Everyone knows that children like to cry, and you can tell whether the child is healthy from the sound of his or her crying. Some children may make a humming sound when they cry, and some parents may be nervous about this. In fact, this is not a big problem. Let me explain it to you in detail.

Because the child's laryngeal cartilage is not well developed, his (her) laryngeal cartilage covers the glottis when inhaling, causing a chicken-like sound. This is called congenital laryngeal stridor. Congenital laryngeal stridor is a laryngeal sound caused by the weakness and relaxation of laryngeal tissue in infants and young children, the collapse of tissue during inhalation, and the shrinkage of laryngeal cavity, also known as laryngeal cartilage softening. It usually occurs shortly after birth or a few months later. Based on the history of laryngeal stridor shortly after birth, there was no history or signs of foreign bodies in the respiratory tract or other diseases. The lateral laryngeal X-ray is normal, the cry is loud and the swallowing is good, and the diagnosis can usually be made without direct laryngoscopy. Onset: Laryngitis may occur due to malnutrition during pregnancy, fetal calcium deficiency, or the epiglottis cartilage is too large and soft, which causes the laryngeal cavity to narrow and vibrate like a valve. Inspiratory arytenoid prolapse is another cause. Clinical manifestations: The infant's breathing is normal at birth, but laryngeal stridor gradually develops 1 to 2 months after birth. Most of the symptoms are persistent or intermittent. Laryngolaryngitis occurs only during the inspiratory phase and may be accompanied by inspiratory dyspnea. There are also cases where the laryngeal sound is not obvious at ordinary times, but occurs immediately after the slightest stimulation. Some are related to body position, getting worse when lying on your back and getting better when lying on your stomach or side. The general condition of most children is good and their crying is not hoarse. Note: The disease may be aggravated by upper respiratory tract infection.

In fact, sometimes when children cry, there are humming sounds, it is only because the children’s vocal tract is not fully developed, so it sounds a bit problematic, but it will get better as they grow up. If this is not the problem, then it may be a respiratory infection, so it is best to go to the hospital for a check-up.