The assessment of current sexual behavior (fantasies, urges, and activities) and sexual preoccupation (measured in minlday) associated with both conventional (i.e., adult relationship-associated) or unconventional (paraphilia and paraphilia-related) sexual behavior were ascertained from a sample of 120 consecutively evaluated males with paraphilias (PA; n = 88, including sex offender paraphiliacs ; n = 60) and paraphilia-related disorders (PRD; n = 32). In addition, an assessment of hypersexual desire, defined as the highest sustained period (at least 6 months minimum duration) ofpersistently enacted sexual behavior (total sexual outlet/week [TSO] after age 15) was assessed. In almost all measures, the PA and PRD groups were not statistically significantly different. The average PA or PRD reported a mean hypersexual TSO of 11.7 ± 7.3, a mean age of 21.6 ± 7.1 years at onset of peak hypersexual behavior, and a mean duration of 6.2 ± 7.6 years of hypersexual TSO. When the sample was stratified into three subgroups on the basis of the lifetime number of PAs+PRDs as a proxy measure of the severity of sexual impulsivity, the "high" group, with at least 5 lifetime PAs and PRDs, consisted of all paraphilic males, predominantly sex offenders, who self-reported the highest hypersexual desire (14.3 ± 7.9), the highest current TSO/week (9.9 ± 8.1), the most current sexual preoccupation (2-4 hr/day), and the highest likelihood of incarceration secondary to paraphilic sex-offending behavior. Although hypersexual desire, a quantitative measure of enacted sexual behaviors, may be a meaningful construct for clinically derived samples, the incidence and prevalence of hypersexual desire in community samples of males with paraphilias and paraphilia-related disorders is unknown.