A sinus infection, in addition to cold symptoms, produces discomfort around the face and eyes. Mucus that is greenish or yellow. Discomfort in the chest area caused by pressure from enlarged glands. These may be signs of a sinus infection affecting your chest as well. Sinus infections are common causes of pain and fever between episodes of cold or allergy-related cough. They are also associated with headaches, nasal congestion, and fatigue. Signs of a possible sinus infection include redness of the face, neck, or ears; pain or tenderness around the eyes, forehead, or cheeks; decreased hearing ability; and/or increased sensitivity to noise. The sinuses are air-filled spaces within the skull that play a role in maintaining bone strength and tooth health. The paranasal sinuses include those located in the upper jaw (maxillary) and lower jaw (mandibular). Infections of the paranasal sinuses can occur when bacteria enter through small openings in the skin near the nose or mouth. This can happen during an injury to the head or neck region or via surgical procedures involving these areas.