It is a very rare pathological state in which a person remains alive but with very low vital signs, to the point that in other times, without clinical monitoring equipment, it gave the impression of being dead. The Greek etymology is known, but not so clear: 954; 945; 964; 945; ( kata ) is "downward", which can be interpreted in the psychic sense, by vitality; and 955; 951; 968; 953; 962; (Lepsis) is "attacked, trapped, surprised", which can be interpreted as the "disease of the attack of slump". Or something like that.