en.wikipedia.org
Erotic asphyxiation (variously called
asphyxiophilia,
hypoxyphilia or
breath control play) is the intentional restriction of
oxygen to the brain for the purposes of
sexual arousal.
...
Erotic asphyxiation can lead to accidental death due to
asphyxia.
...
Various methods are used to achieve the level of oxygen depletion needed, such as a hanging, suffocation with a plastic bag over the head, self-
strangulation such as with a
ligature, gas or volatile solvents, chest compression, or some combination of these.
[4] Sometimes, complicated devices are used to produce the desired effects.
[5] The practice can be dangerous even if performed with care and has resulted in a significant number of accidental deaths. Uva (1995) writes "Estimates of the mortality rate of autoerotic asphyxia range from 250 to 1000 deaths per year in the United States."
[6] Cases have also been reported in Scandinavia
[7] and Germany.
[8][9] Autoerotic asphyxiation may often be mistaken for suicide, which is a major cause of death in teenagers.
[10]