Sinus infections, or sinusitis, are common and easily treated.| kidshealth.org
Ear infections are common among kids and, often, painful. Find out what causes them and how they're treated.| kidshealth.org
Adenoids trap germs, so sometimes they swell while fighting an infection. If they get infected, tonsils and adenoids might be removed in a surgery at the same time.| kidshealth.org