OCD : it's no laughing matter -- A closer look at the most common obsessions and compulsions -- The biology of OCD : what you need to know -- A step-by-step guide to getting a diagnosis -- If it isn't OCD : understanding related disorders, comorbidity and the obsessive-compulsive spectrum -- The good news about treatment : what works best -- What to expect from treatment, step by step -- The role of medication in recovery -- Children and OCD -- How to help when a loved one has OCD -- What to do when someone you love isn't ready to begin treatment -- Resources : where to find more help -- Appendix. The Yale-Brown Obsessive-Compulsive Scale (YBOCS).