Sex addiction or compulsive sexual behavior takes on many forms but is characterized by an obsession with sexual thoughts or behaviors which can harm your physical health, job and relationships. Sex addiction ranges from an obsession with a commonly enjoyable sexual experience to others that fall outside the parameters of commonly accepted conduct. Sex addiction also has a variety of symptoms and severity. With treatment and self-help, addictive sexual behavior can be managed to allow you to lead a healthy, safe lifestyle. http://www.mayoclinic.org/diseases-conditions/compulsive-sexual-behavior/basics/definition/con-20020126