The following symptoms may indicate a sinus infection in a child:
- a “cold” lasting more than 10 to 14 days, sometimes with a low-grade fever
- thick yellow-green nasal drainage
- post-nasal drip, sometimes leading to or exhibited as sore throat, cough, bad breath, nausea and/or vomiting
- headache, usually in children age six or older
- irritability or fatigue
- swelling around the eyes
Young children have immature immune systems and are more prone to infections of the nose, sinus, and ears, especially in the first several years of life. These are most frequently caused by viral infections (colds), and they may be aggravated by allergies. However, when your child remains ill beyond the usual week to 10 days, a serious sinus infection is likely.