Which of the following is the best definition of decompression sickness?

The best definition of decompression sickness is a condition occurring after a rapid ascent. This condition, often referred to as "the bends," results from nitrogen dissolved in the body's tissues forming bubbles as the pressure decreases rapidly during ascent. When a diver ascends too quickly, the nitrogen that was previously under pressure in the body forms bubbles, which can lead to various symptoms ranging from joint pain to more severe issues like paralysis or even death, depending on the severity and location of the bubbles.

The relationship between ascent rate and the risk of decompression sickness is crucial, as safe ascents allow for the controlled release of nitrogen from the body without forming harmful bubbles. Understanding this mechanism is vital for divers to prevent the condition and ensure safety during their underwater activities.