When a toddler coughs at night, they may have a virus that will eventually clear on its own. Learn more about the causes and how to treat nighttime cough.

A tickle might worsen at night because you’re lying down, which causes mucus and other irritants to pool in the back of your throat. Sleeping with your head slightly elevated can help.

People who started smoking under the age of 18 are more likely to experience respiratory symptoms, such as wheezing and phlegm, in their 20s, according to research presented at the European ...