When Do Babies Start Drooling; Causes and Developmental milestones

When Do Babies Start Drooling; Causes and Developmental milestones

Drooling is a common occurrence in babies. When saliva flows out of the mouth of a person unintentionally, it is known as drooling. Babies start drooling about the 3rd month of age. Some drool a bit and some a lot. In this article, we will discuss in detail about when do babies start drooling and the factors which influence the drooling process.

When do babies start drooling

Drooling is common in babies, and they usually drool about the first two years of life even while asleep. Babies drool excessively due to the underdeveloped muscles of mouth or excessive production of saliva by salivary glands. It is also common during the teething period, so be ready to change your baby’s clothes many times a day. There is nothing to worry about because drooling is a part of his/her physical development. 

But if your baby drools after the age of four years, then it is not normal, and you must consult with your child’s pediatrician.

Drooling and developmental processes

Drooling plays an important role in the developmental process in babies. It is a key sign that your baby starts to develop teeth. If your baby starts to drool, then it is an indication that your baby enters in the new period of growth. For example, if your baby starts to drool while smelling milk or food, then you should know that your baby’s sense of smell is growing.

It is also helpful for the baby to digest semi-solid food because it contains beneficial enzymes.

Causes of drooling


It starts from birth and reaches a peak when the baby reaches about three months of age because the baby becomes more active. 

Open mouth posture

If a baby has a habit of keeping his mouth open for a long time, it is also a cause of drooling. The common reason for it is that the baby’s nose is blocked, so that’s why he/she opened his/her mouth for more extended periods and cannot swallow saliva at regular intervals. 

Staying focused for longtime

When babies stay focused on a particular task for a long time, their brains get stimulated. In this situation, babies produce six fold more saliva. When the baby is focused, his attention is diverted from mouth and tongue, and the baby starts to drool. 

Neurological disorders

Certain medical conditions set your baby at the risk of drooling, especially when they cause loss of the facial muscles. These conditions include Parkinson’s disease and cerebral palsy. These lead your mouth open and which leads to drop saliva.

Negative effects of medication

Some medications like drugs used for eye check-up in children and sleep-induced drugs are the major causes of drooling. 

Treatment of drooling

Drooling is a common phenomenon in growing up babies and important for physical development. It can last for two years if it prolongs, then you should not take it lightly and must consult your doctor. Your doctor looks for some signs and suggests some treatments. Some of them are as follow;

  • Works on the child’s capacity to swallowing
  • Deduct acidic food from your child’s diet
  • Help your child to closed his/her lip stance
  • Improving oral sensory awareness to help the child when his/her mouth or face is wet.