What is the most commonly reported symptom of decompression sickness (DCS)?

The most commonly reported symptom of decompression sickness (DCS) is pain, specifically joint pain or "the bends." This pain results from the formation of gas bubbles in body tissues, particularly in areas like the joints, during a rapid ascent after diving. When a diver ascends too quickly, the reduction in pressure causes nitrogen, which was absorbed at greater depths, to come out of solution and form bubbles. These bubbles can penetrate tissues and cause inflammatory responses, leading to significant discomfort.

While other symptoms such as fatigue, dizziness, and nausea can be associated with DCS, they are generally less frequently reported compared to pain. The hallmark presentation often directs attention to the painful sensations experienced by divers, making it crucial to recognize this symptom for timely interventions and treatment. This emphasizes the importance of monitoring divers closely for joint pain, as early detection and management can help prevent more severe complications associated with DCS.