Which of the following is NOT a symptom of sinusitis?

Increased appetite is not a symptom of sinusitis. When someone is suffering from sinusitis, which is an inflammation or swelling of the tissue lining the sinuses, they typically experience symptoms such as facial pain, nasal obstruction, and fever. These symptoms are related to the body's response to infection or inflammation.

Facial pain often arises from increased pressure and congestion in the sinuses, while nasal obstruction results from that same congestion blocking airflow. Fever can occur as the body fights off the infection, signaling an inflammatory response. Increased appetite, on the other hand, is usually not associated with sinusitis; instead, patients often experience a decreased appetite due to discomfort or a general feeling of unwellness. This distinction highlights the relevance of the correct answer in understanding the symptoms commonly associated with sinusitis.