Sinusitis is inflammation of the lining of the sinuses (bone space between the nose and eyes), maxillary, ethmoid, frontal and sphenoid. There is another type of sinusitis caused by a bacteria that causes infection, apart from inflammation. But the main cause of the appearance of sinusitis is the common cold, and in the case of allergic sinusitis, exposure to that which causes irritation or allergy environmental type. Among the most common symptoms that differentiate sinusitis from a normal cold, it emphasizes facial pain and pressure, nasal congestion and sinus area, and the presence of pus in the nasal cavity. Sometimes also appears fever, headache, shortness of breath and fatigue, symptoms that last a long time. To establish a clear diagnosis of this disease are conducted various medical tests, such as rinoscopia, endoscopy, radiography and culture of the nasal mucus. Subsequently, the treatment of sinusitis is focused on the use of antibiotics for 14 days and in very specific cases, surgery is required.