Sinusitis can be divided into acute sinusitis and chronic sinusitis.
Acute sinusitis is mainly characterized by nasal congestion, purulent nasal discharge, and headache. This disease can be completely cured with active treatment. If left untreated, the infection may continue to spread and may even lead to facial cellulitis, intracranial infection, orbital cellulitis, etc. If acute sinusitis is not treated, it may turn into chronic sinusitis.

The symptoms of chronic sinusitis are generally not severe. Common symptoms include nasal congestion, purulent nasal discharge, dizziness, and decreased sense of smell. However, complications may still occur, such as intraorbital complications and intracranial complications. Long - term chronic sinusitis may also affect a person's mental state and memory.
