Flight Surgeon Module B Complete Practice Test 2026

Type 2 decompression sickness involves the more serious symptoms that affect the lungs and nervous system. The classic pulmonary presentation is often called a “chokes” episode, which includes coughing, chest tightness, and shortness of breath from nitrogen bubbles in the lungs. This is why chokes are associated with Type 2 DCS. The other listed symptoms—skin manifestations, itchy skin, and joint pain—are typical of Type I DCS, which involves milder musculoskeletal and cutaneous signs.