Symptoms of sinusitis are mainly manifested as nasal congestion, pus, head and face pain, decreased sense of smell, and systemic symptoms. 1. Nasal congestion: mainly manifested as unilateral persistent nasal congestion on the affected side, or bilateral nasal congestion. 2. Pus: acute sinusitis is mainly pus or mucus pus, with a small amount of blood, flow to the throat can appear nausea and vomiting symptoms. Chronic sinusitis is mostly mucus pus, often appearing postnasal drip. 3. Head and face pain: this symptom is the most common symptom of acute sinusitis, acute sinusitis pain can be in the frontal face, can also be in the occipital. Chronic sinusitis is mainly characterized by swelling and pain around the eyes and nose. 4. Decreased sense of smell: Both acute sinusitis and chronic sinusitis can have transient or permanent decreased or lost sense of smell. 5. Systemic symptoms. Acute sinusitis is an infectious disease, can be accompanied by chills, fever, malaise and other systemic symptoms. Chronic sinusitis can show fatigue, weakness and other symptoms. If you suspect paranasal sinusitis, you must consult a doctor in time to clarify the diagnosis and condition, and standardize the treatment.