What are the signs and symptoms of chronic sinusitis?

Chronic sinusitis may have the following symptoms for 12 weeks or more: facial pain/pressure, facial congestion/fullness, nasal obstruction/blockage, loss or change in sense of smell, thick nasal discharge/discolored post-nasal drainage, pus in the nasal cavity, and at times, fever.  One may also have headache, bad breath, and fatigue.