This text is a primary review for the written pain medicine board examination. It presents important clinical entities while covering critical pain medicine concepts. Chapters are brief and follow a common format to facilitate quick look-up. Each chapter in Pain Medicine includes a concise discussion of the latest supporting evidence as well as case scenarios. The coverage is clinically and board relevant and up-to-date appealing to residents preparing for the written board examination and practitioners preparing for re-certification, which occurs every 10 years. Beyond these groups, the book has the potential to appeal to learners and practitioners around the world; pain medicine is burgeoning globally, and there is great need for concise, clinically relevant resources.