What is a common symptom of sinus squeeze?

Sinus squeeze, also known as barosinusitis, occurs when there is a pressure imbalance between the sinuses and the environment, typically experienced during descent or ascent while diving. When the air pressure changes, the sinuses may struggle to equalize because of mucus obstruction or inflammation. As a result, one common symptom of sinus squeeze is pressure in the molars. This occurs because the maxillary sinuses are situated close to the upper teeth, and inflammation or increased pressure in the sinuses can lead to a sense of discomfort or pain perceived in the molar region.

Recognizing this symptom is crucial for divers, as it can indicate that they are experiencing difficulty with pressure equalization, which may necessitate ascending to a shallower depth or aborting a dive to prevent injury. Understanding how sinus squeeze manifests helps in preventive measures and in making informed decisions regarding diving practices.