What type of pain is associated with bends in decompression sickness (DCS)?

In decompression sickness (DCS), commonly known as "the bends," the pain experienced is typically described as a deep, dull, and boring pain, often localized in the joints. This type of pain arises due to the formation of nitrogen bubbles in the bloodstream and tissues when a diver ascends too quickly after being underwater. These bubbles can cause irritation and inflammation in the joints and tissues, leading to the characteristic joint pain described by many individuals who experience DCS.

Pain in the joints is frequently reported because areas like the elbows, knees, and shoulders are particularly susceptible to the effects of the bubbles. The deep, aching nature of the pain can often mimic that of other joint-related issues, but the context of rapid ascent and the onset of symptoms helps to distinguish it as a symptom of decompression sickness. The dull, boring quality of the pain is a hallmark characteristic that aids in identifying DCS among divers and flight personnel after decompression events, emphasizing the importance of recognizing the correct type of pain in diagnosing this condition.