This article presents a literature review of contemporary research on the definition, diagnosis, assessment, and treatment methods of so-called “sexual compulsivity,” “sexual hyperactivity,” and “hypersexuality,” We review published literature on proposed diagnostic criteria, symptomatology, and treatments. The Sexual Compulsivity Scale (SCS), Compulsive Sexual Behaviour Inventory (CSBI), Sexual Addiction Screening Test (SAST), and Hypersexual Behaviour Inventory (HBI) were found to be the most frequently used assessment tools. Although all of these scales have demonstrated high internal consistency, each scale is based on a unique perspective and understanding of “hypersexuality.” This article discusses the validity and reliability, as well as applicable populations for assessment, foe each of the scales. These of multiple assessment strategies is encouraged in order to glean greater insight into the nature of hypersexuality sexual compulsivity. We briefly discuss the importance of multimodal intervention strategies, while providing in-depth evaluation of cognitive-behavioural psychotherapy and 12-step programs. The article also highlights and provides a discussion of the Sexual Behaviours Clinic (SBC) intervention strategies for individuals labelled as “sex addicts.” Finally, we suggest directions for future emphasis in research in diagnosis, assessment, and treatment in order to reduce conceptual ambiguity and enhance empirical efficacy.