What are common signs of decompression sickness (DCS)?

Joint pain, dizziness, difficulty breathing, and fatigue are indeed common signs of decompression sickness (DCS). DCS occurs when nitrogen bubbles form and expand in the body's tissues and bloodstream upon rapid ascent after diving, which can lead to a variety of symptoms depending on where these bubbles form.

Joint pain, often referred to as "the bends," is one of the hallmark symptoms and can be quite debilitating. Dizziness may arise due to impaired blood flow or oxygen delivery as bubbles disrupt normal circulation. Difficulty breathing can occur if nitrogen bubbles form in the lungs or if there is obstruction in the circulatory system, leading to more severe consequences. Fatigue is a non-specific symptom that can result from the body working hard to cope with the effects of DCS, as well as the stress and physical exertion that may accompany a dive.

Other choices may include symptoms that can occur in various conditions but are less specific to DCS. Understanding these signs is crucial for early recognition and intervention, making it essential for divers to be aware of them before, during, and after a dive.