Knowing sex addiction terms can help sex addicts better grasp their actions. Center for Healthy Sex offers resources and therapy to those in need. Get the facts on sex addiction, behavior of someone who has an unusually strong sex drive or sexual obsession. Read about sexual addiction treatment, and learn about symptoms, causes, diagnosis, and prognosis. What is sex addiction? There is debate about whether it's an addiction, and it's not just about sex, experts say. That's one reason that Reid prefers the term.