Insidious onset of symptoms similar to alcohol intoxication (or nitrous oxide inhalation)
Early stage: Euphoria, false sense of security, impaired judgement, diminished reaction times
Later stage: Impaired concentration and memory, paresthesias, hallucinations
Final stage: [Occurs at depths of at least 10-13ATM (333-429 feet)], lethargy and loss of consciousness
Causes high risk of making bad decisions at depth, i.e. impairs diver's judgment therefore leading to drowning accidents (cause of up to 9% of diving deaths)
Early stage: Euphoria, false sense of security, impaired judgement, diminished reaction times
Later stage: Impaired concentration and memory, paresthesias, hallucinations
Final stage: [Occurs at depths of at least 10-13ATM (333-429 feet)], lethargy and loss of consciousness
Nitrogen narcosis
Barotrauma of descent
CO2 narcosis
Otic barotrauma
Malignant hyperthermia
Pulmonary barotrauma
Cholinergic crisis
Sinus barotrauma