Sinusitis, often confused with common colds or COVID-19, is a condition characterized by inflamed and swollen nasal passages. This inflammation, primarily caused by colds or allergies, can lead to a blockage of the sinuses. The symptoms of sinusitis vary depending on which sinus is affected and can include painful pressure, impaired sense of smell, headache, and in more severe cases, fever and toothache.

Firstly, it’s important to distinguish between sinusitis and other conditions like COVID-19. While both can present with loss of smell, sinus infections usually come with facial pain and pressure, whereas COVID-19 might have additional symptoms like fatigue, shortness of breath, and gastrointestinal issues. If you’re uncertain, it’s best to consult a healthcare professional.

To soothe sinusitis symptoms, methods such as nasal rinses, decongestants, and pain relievers can be effective. These initial symptoms, similar to those of a cold, might include fatigue, cough, and ear pressure. Understanding the progression of these symptoms is crucial in identifying a sinus infection. Generally, symptoms of a common cold resolve in 7 to 10 days, but if they persist, it might indicate a sinus infection.

Another related condition is post-nasal drip, often a result of allergies, viral infections, or sinus infections. It can also be caused by irritants in the air, certain medications, or even pregnancy. Similarly, a persistent dry cough in a nonsmoker with clear lungs and a normal chest x-ray can be attributed to postnasal drip, acid reflux, or undiagnosed asthma. In some cases, these conditions might not present with typical symptoms, making diagnosis more challenging.

For more detailed information, you can visit Harvard Health, Ohio State Health & Discovery, and Keck Medicine of USC for comprehensive insights on sinusitis.