What is a symptom of reverse squeeze?

A symptom of reverse squeeze, also known as ear barotrauma during ascent, typically manifests as pressure in the ears. This occurs when the expanding gas in the lungs during a rapid ascent causes unequal pressure between the middle ear and the external environment. If the Eustachian tube, which helps equalize pressure, does not function properly, the pressure difference can lead to discomfort, pain, and the sensation of fullness in the ears.

The symptoms related to reverse squeeze specifically point out the complications that arise from the inability to equalize pressure during ascent, making the sensation of pressure in the ears a hallmark symptom. This condition is critical to recognize because it indicates that the diver may need to take corrective actions, such as descending slightly to alleviate the pressure or employing techniques likeValsalva maneuver to equalize ear pressure. Understanding this symptom is vital for divers to prevent potential damage to the ear structures from pressure changes.