Sinusitis refers to inflammation of the sinuses that occurs with a viral, bacterial, or fungal infection.Sinusitis is inflammation of the par nasal sinuses, which may be due to infection, allergy, or autoimmune issues. Most cases are due to a viral infection and resolve over the course of 10 days.

Most people do not transmit sinus infections; most clinicians agree that except for rare instances, sinus infections are notcontagious but arise from mainly viruses and bacteria that, by chance, contaminate a person who sinuses support their proliferation because of minor, and rarely, major abnormalities in the person’s sinus tissue (for example, swelling, inflammation, abnormal mucus production, and rarely, facial or nasal trauma).

Sinusitis is inflammation of the air cavities within the passages of the nose. Sinusitis can be caused by infection, but also can be caused by allergies and chemical or particulate irritation of the sinuses.