Which of the following are symptoms of decompression illness?

The symptoms of decompression illness, also known as decompression sickness or "the bends," often manifest as physiological reactions in the body due to the rapid ascent after a dive. These symptoms occur because of the formation of nitrogen bubbles in the tissues and bloodstream when a diver ascends too quickly, causing various physical discomforts.

Focusing on the chosen answer, tingling, joint pain, and numbness are indeed classic symptoms of decompression illness. Tingling and numbness are often signs of nerve involvement due to the disruption of normal circulatory and neural functions. Joint pain is also commonly reported as nitrogen bubbles can accumulate in the joints, leading to pain similar to that experienced in conditions like arthritis.

The other options present symptoms that can be associated with different medical conditions or stress responses, rather than being characteristic indicators of decompression illness. While confusion and dizziness can arise from various causes during diving, including inadequate oxygen supply or hypercapnia, they are not definitive symptoms of decompression sickness. Similarly, rapid heartbeat and high blood pressure can occur due to anxiety or panic but do not specifically indicate decompression illness. Headaches and nausea may arise from factors like gas narcosis or other dive-related issues but are not specific to decompression illness and could result