masochism

The deriving of sexual gratification, or the tendency to derive sexual gratification, from being physically or emotionally abused.

The deriving of pleasure, or the tendency to derive pleasure, from being humiliated or mistreated, either by another or by oneself.

A willingness or tendency to subject oneself to unpleasant or trying experiences.

A form of sexual perversion in which the victim craves, and takes pleasure in, physical abuse from one of the other sex: the opposite of sadism.

the enjoyment of receiving pain

sexual pleasure obtained from receiving punishment (physical or psychological)