Mucus frompostnasal dripand coughing can also trigger vomiting, especially in children.

This mucus is usually swallowed without notice throughout the day.

When you lie down at night,mucus can collectat the back of the throat.

A person at home on couch with nausea about to vomit

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This can trigger coughing if the mucus is inhaled into the lungs or sticks to the vocal cords.

Children under 5 years tend to swallow it instead.

Babies and young children may also vomit it.

Children can experience coughs at night when theyhave a cold, triggered by postnasal drip while lying down.

Mucus draining into the stomach cancause nausea, possibly leading to vomiting.

It usually goes away sooner after the baby is born.

Children with GERD can have symptoms that are different from adults, including persistent vomiting.

If you or your child are showing signs of GERD, talk to a healthcare provider.

Vomiting From Coughing

Coughing can trigger thegag reflexand lead to vomiting.

Kids in particular have a very active gag reflex and may cough so hard they throw up.

Unless the vomiting continues, vomiting due to cough isn’t usually something to worry about.

Vomiting Clear Liquid

Mucus can be thin and watery.

This mucus can be swallowed and vomited.

The discharge from vomiting on an empty stomach or with only water in the stomach is a clear fluid.

Some need to be used only in the short term.

Many are not appropriate for children, and others should not be taken while pregnant.

Seek immediate emergency care if vomit is inhaled or there is difficulty breathing.

Medical University of South Carolina.Post-nasal drip.

American Academy of OtolaryngologyHead and Neck Surgery Foundation.Post-nasal drip.

Indiana University Health.Postnasal drip.

Harvard Health.Treatments for post-nasal drip.

Harvard Health.Why are you coughing at night?.

Asthma and Allergy Foundation of America.Nasal allergies (rhinitis).

University of Texas Southwestern Medical Center.Baby (and tissues!)

on board: Tips for managing pregnancy rhinitis.

2015 Sep;82(1):105111. doi:10.1016/j.bjorl.2015.04.011

University of Michigan.Laryngopharyngeal reflux.

University of Utah Health.My child coughs so hard, they vomit.

Should I worry?.

Harvard Health.That nagging cough.

Manhattan Gastroenterology.Vomit color-green, yellow, brown, black, clear.

Mount Sinai.Nausea and vomiting.

Centers for Disease Control and Prevention.Sinus infection (sinusitis).