NAUI Divemaster Practice Exam 2025 – Comprehensive Test Prep

Decompression sickness, often referred to as "the bends," is a condition that arises when a diver ascends rapidly after spending time at greater depths, leading to nitrogen bubbles forming in the body's tissues. The symptoms commonly associated with decompression sickness include fatigue, joint pain, dizziness, and difficulty breathing.

Fatigue is a frequent symptom because the body is under stress as it tries to adjust to the changes in pressure and resolve the nitrogen bubble formation. Joint pain occurs as gas bubbles can accumulate in the joints, causing inflammation and discomfort. Dizziness can result from changes in blood circulation or pressure in the brain, while difficulty breathing may arise if gas emboli block the pulmonary circulation, leading to challenges in oxygen exchange.

Other options present symptoms that may occur in various other conditions but are not specifically indicative of decompression sickness. For instance, headaches and disorientation can be linked to a wide range of causes, including dehydration or altitude sickness, rather than being definitive signs of decompression sickness. Hence, the symptoms listed in the correct choice are the most accurate representation of what to expect in cases of decompression sickness.