Sinus Infections Signs and Symptoms Most common Sinus infection symptoms and signs: Facial fullness/facial pain: sensation of facial fullness is one of the sinus infection symptom results from the inflammation and local oedema of the sinuses. The face looks mildly swollen and dull. Headache: headache often accompanies sinusitis. Headache or pressure of a dull, constant, or aching sort over the affected sinuses is common with both acute and chronic stages of sinusitis. This pain is typically localized to the involved sinus and may worsen when the affected person bends over or when lying down. Pain often starts on one side of the head and progresses to both sides. Thick Purulent nasal discharge: Acute and chronic sinusitis may be accompanied by thick nasal discharge that is usually green or yellowish in colour and may contain pus (purulent) and/or blood. Usually results from improperly treated upper respiratory tract infection like common cold. Fever: Fever of sinusitis is usually low grade but may become high grade when there is accompanying pneumonia. Blocked nasal or sinus passages: This occurs especially at night. Are you sleeping with your mouth open because you can't breathe through your nose when you lie down? You may have sinusitis. Diminution or loss of sense of smell: with mucus plugs clogging the nasal mucosal surface, there is poor perception of smell. Other more general non specific sinusitis symptoms include: Chills, fever or general malaise.