Sinus infection symptoms are characterized by painful pressure, which varies depending on the affected sinus. Frontal sinusitis causes pain in the forehead, maxillary sinusitis results in discomfort over the cheek or in the upper jaw and teeth, and pain behind the eyes indicates ethmoid or sphenoid sinusitis. Sphenoid sinusitis often leads to pain at the top of the head.

Initially, sinusitis symptoms resemble those of a common cold, including fatigue, cough, impaired sense of smell, fullness or pressure in the ears, or headache. To alleviate symptoms while your body combats the infection, utilize nasal rinses, decongestants, and pain relievers.

Other symptoms of sinus infection include bad breath, fever, lethargy, loss of smell or taste, and ear pressure. Unlike common colds, sinus infection symptoms typically persist beyond 7 to 10 days. Sinus blockage can be caused by various factors, including environmental, anatomical, and genetic influences. Common culprits are swelling of the nasal passages due to colds or allergies, and structural issues like a deviated septum.

Distinguishing between sinus infection and COVID-19 can be challenging due to overlapping symptoms like fatigue, cough, and shortness of breath. Sinus infections often lead to more pronounced facial pain/pressure. Acute sinusitis usually lasts 7 to 10 days if viral, but bacterial infections can extend up to 4 weeks. Chronic sinusitis persists for 12 weeks or more, often aggravated by colds, viral infections, or a compromised immune system.

Chronic sinusitis involves long-term inflammation of the sinuses, which are moist air spaces behind the bones of the upper face. Obstruction in sinus drainage can lead to mucus buildup and infection. Chronic sinusitis often results from long-term or recurring blockages and inflammation, sometimes triggered by allergies to dust, mold, or pollen.

For more detailed information about sinusitis, its symptoms, causes, and treatments, visit Harvard Health, Harvard Health, Keck Medicine of USC, Harvard Health, Ohio State Health & Discovery, USF Health News Care Blog, Harvard Health, and Harvard University for comprehensive insights.