How is pain described in terms of decompression sickness symptoms?

Pain associated with decompression sickness (DCS) is described as severe due to the physiological effects of nitrogen bubbles forming in the body after rapid decompression. When a diver ascends too quickly, nitrogen that has been absorbed into the body under pressure can come out of solution and form bubbles. These bubbles can interfere with tissue and organ function, leading to significant pain and discomfort, often described as a "deep ache" in the joints, muscles, or other affected areas.

The severity of the pain is not merely a superficial discomfort; it can be intense enough to impair movement and require medical attention. This aspect of DCS symptoms is crucial as it guides emergency response protocols and treatment strategies, highlighting the dangers of rapid ascension without proper safety measures in diving practices.