Is it normal for a four-month-old baby to drool?

Patient's question:

A four-month-old child is drooling, and this condition has been present for some time. The child is hesitant to take medication; please provide some advice.

Doctor's answer:

Babies drooling is mainly due to the following two reasons:
First, physiological drooling. Generally, when babies reach three to four months old, their salivary glands gradually develop and mature, leading to an increase in saliva production. However, the function of saliva is still not fully developed, so they often drool.
Second, pathological drooling. When babies suffer from certain oral diseases, such as ulcers or herpes in the mouth, tonsillitis, or stomatitis.

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