Why does a 15-month-old baby constantly drool, and what can be done about it?

Patient's question:

No

Doctor's answer:

When the child is around 3 to 4 months old, the central nervous system and salivary glands tend to mature. Saliva secretion gradually increases. Additionally, some children have already started to grow teeth, which stimulates the oral nerves and further increases saliva production. The baby's mouth is relatively shallow, and their swallowing ability is poor, so they cannot swallow or store the saliva in the mouth. As a result, the saliva constantly flows out of the mouth. This is a physiological phenomenon, and it usually naturally disappears between the ages of 2 to 3.