The hallmarks of compulsive sexual behavior (CSB) are recurrent and intense sexually arousing fantasies, sexual urges, and behaviors that cause individuals distress in daily functioning. Clinical signs of CSB can include anxiety, depression, somatic complaints, alcohol or drug use or dependency, relationship problems, or signs of abuse. This article describes the symptoms of paraphilic and nonparaphilic CSB and discusses their epidemiology, etiology, as well as comorbid psychiatric conditions. It also presents screening questions that clinicians can use with patients suspected of having CSB and outlines medical and psychiatric treatment for the condition. When CSB is suspected, referral to a clinician experienced in treating sexual disorders is recommended.