Sinusitis is a medical condition where the tissue linings of the sinuses become inflamed. Symptoms include: sinus pain and pressure, nasal stuffiness, nasal discharge, cough/congestion. Sinus headache, ear pain, and low energy can accompany this.
Sinusitis can be caused by common cold, nasal polyps, or allergic rhinitis. Allergies to either environmental, food, or seasonal allergies can be a trigger.