Sinusitis, also known as a sinus infection, is a condition in which the sinuses become inflamed and swollen due to an infection, allergy, or other irritant. The sinuses are air-filled spaces in the skull that are lined with a thin layer of mucus and are connected to the nasal passages.
If you suspect that you have sinusitis, it is important to see a healthcare professional. They can perform a physical exam and may order imaging tests, such as a CT scan or MRI, to confirm the diagnosis and determine the extent of the infection.
In some cases, sinusitis may become chronic, lasting for more than 12 weeks. Chronic sinusitis may require more aggressive treatment, such as surgery to remove blockages or repair structural abnormalities in the sinuses.