What is a common symptom of sinus block during descent?

Pain or pressure in the face is a common symptom of sinus block during descent due to the changes in atmospheric pressure in the cabin. As an aircraft descends, the external air pressure increases, which can cause the air within the sinuses to become trapped. This trapped air can create a feeling of fullness, discomfort, or pain in the facial area, particularly around the sinuses. This condition is often exacerbated in individuals with pre-existing sinus issues or colds, making them more susceptible to the sensations associated with a sinus block.

Other options may relate to a variety of different conditions or physiological responses, but they do not specifically align with the typical symptoms experienced during a sinus block that occurs during the descent phase of flight.