When patients develop bacterial sinusitis, it can cause significant nasal congestion, more purulent nasal discharge, decreased sense of smell and headache and other related symptoms. Some patients with more severe acute attacks of sinus inflammation may further develop symptoms related to chills, fever and general weakness. The symptoms of maxillary sinusitis, frontal sinusitis and butterfly sinusitis are as follows: 1. Maxillary sinusitis: swelling, pain and discomfort in the jaw and face may occur. 2. Frontal sinusitis: if frontal sinusitis or sieve sinusitis is present, swelling and pain in the arch of the eyebrow, forehead and root of the nose may occur. 3. Butterfly sinusitis: headaches in the posterior occipital region often occur and can be treated by further nasal Endoscopy and imaging of the nose can help to clarify the diagnosis.