Sinusitis is the inflammation of the sinuses. It may be caused by a bacterial or viral infection or be non-infectious. The non-infectious type is most commonly caused by allergies. Symptoms of sinusitis include facial pain and tenderness, headache, nasal discharge, fever, loss of smell, nasal congestion, earache, neck pain, weakness, tiredness, and cough. Treatment options include medications such as decongestants, antibiotics and steroids, surgery, drinking plenty of fluids, humidifying the environment, nutritional supplements, herbal medicine, acupuncture, chiropractic, and homoeopathy.