What is the reason for the baby's hoarse voice at three months?

Patient's question:

From birth to now, it has been more than three months, and there has always been a sound in the throat. Like phlegm. About the past treatment and its effectiveness: The doctor said it was congenital stridor of the child's throat. What kind of help is needed: Hello, is it serious? What treatment is needed

Doctor's answer:

This is due to the child's congenital hypochondroplasia. Such children require extra care, and if they eat too much during their afternoon nap, it can easily lead to breathing difficulties.
Advice: Pay close attention to their care, and avoid overfeeding before bedtime. Generally, after the child turns three, the cartilage growth will improve, and the condition will naturally resolve on its own. However, if a child with stridor develops an upper respiratory infection, the stridor may become more pronounced.
The above advice is for the question "Infant boy. Three months old. From birth to three and a half months." I hope it helps. Wishing you good health!