<unk>  <unk> , also known as immersion<unk><unk> , occurs when fluids from the blood leak abnormally from the small vessels of the lung<unk>  capillaries) into the airspaces (alveoli).<unk>  usually occurs during exertion in conditions of water immersion, such as<unk>  and diving. With the recent surge in popularity of triathlons and<unk>  in open water events there has been an increasing incidence of<unk> . It has been reported in scuba divers, apnea (breath hold) free-diving competitors, combat swimmers, and triathletes. The causes are incompletely understood as of 2010.
Swimming-induced pulmonary edema
Decompression sickness
Toxic shock syndrome
Culture-bound syndrome
Occult pneumonia
Multiple organ dysfunction syndrome
Ehrlichiosis ewingii infection
Systemic inflammatory response syndrome