Can Covid Cause Sinus Infection. Symptoms of covid and a sinus infection (sinusitis) have some overlap, but there are some differences. The treatments for each condition are also different, which is why it’s important to see a doctor and get an accurate diagnosis.
Symptoms of a sinus infection. Even the flu.” a sinus infection, sinusitis, occurs when your sinuses become inflamed and blocked. Common symptoms of sinus infections may include: