In which condition might a patient experience low-grade fever and headache along with facial pain?

The presence of a low-grade fever and headache, accompanied by facial pain, is indicative of acute sinusitis. In this condition, inflammation and infection of the sinus cavities occur, often resulting from a viral upper respiratory infection that can lead to the accumulation of mucus and subsequent pressure in the sinuses. The facial pain is a direct result of this pressure and inflammation in the sinus areas, particularly around the cheeks, forehead, and behind the eyes.

Acute sinusitis typically presents with these symptoms due to the inflammatory response eliciting systemic symptoms like fever, which is a sign of the body fighting an infection. The headache often correlates with sinus pressure and congestion, intensifying with movements that affect sinus drainage.

Other conditions listed may have overlapping symptoms but do not typically present with the combination of low-grade fever, headache, and significant facial pain. Chronic sinusitis usually involves more prolonged symptoms without acute fever and is often characterized by nasal congestion and reduced sense of smell over time. Allergic rhinitis primarily leads to itchy, watery eyes, sneezing, and nasal congestion, but does not usually cause fever or facial pain. Pharyngitis can cause sore throat and may accompany systemic symptoms, but it does not typically cause facial pain associated with sinus pressure. Therefore,