This book provides a comprehensive guide to the basic principles and fundamentals of dry needling, a technique used by physical therapists for the treatment of myofascial pain. Through a theoretical approach, the reader will learn the anatomical, physiological and biomechanical basis necessary for the safe and effective application of this technique. The characteristics of trigger points, their role in muscle pain, and the tools necessary to locate and treat them are explored.Throughout the book, key topics such as proper needle manipulation, clinical assessment of the patient, and essential precautions to avoid complications are addressed.This book is designed for both physical therapy students and professionals seeking to expand their knowledge and skills in a technique that has proven to be highly effective for pain management and functional improvement of the patient.