Which disorder involves sexual arousal from being humiliated or restrained?

The disorder that involves sexual arousal from being humiliated or restrained is Sexual Masochism Disorder. This condition is characterized by the individual experiencing intense sexual arousal not only from being humiliated but also from acts of restraint or suffering. In order for the diagnosis to be fulfilled, these fantasies, sexual urges, or behaviors must lead to significant distress or impairment in functioning, and the person must engage in these activities with a level of intensity that goes beyond mere casual interest or experimentation.

This understanding is rooted in the broader context of paraphilic disorders as classified in the DSM-5, where sexual masochism is differentiated from other paraphilic behaviors. For example, voyeuristic disorder is focused on the sexual excitement derived from observing others engaged in intimate behaviors, while frotteuristic disorder is about becoming sexually aroused by touching or rubbing against a non-consenting person. Exhibitionistic disorder, on the other hand, involves the exposure of one's genitals to an unsuspecting individual for sexual gratification. Each of these disorders has its own specific focus and criteria that clearly demarcate them from Sexual Masochism Disorder, which is distinctly centered around self-inflicted humiliation and submission.