Hypersexual disorder was proposed in 2010 for inclusion in the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition (DSM-5) of the American Psychiatric Association (APA). The Sexual and Gender Identity Disorders Workgroup recommended inclusion in the DSM-5 in Section III (Emerging Measures and Models, Conditions for Further Study); however, it was ultimately excluded from the final publication of the DSM-5. The label "hypersexual disorder" was reportedly chosen because it did not imply any specific theory for what causes hypersexuality, which remains unknown. A proposal to add sexual addiction to the DSM system had been previously rejected by the APA, as not enough evidence suggested to them that the condition is analogous to substance addictions, as that name would imply.