This textbook provides physical therapists with a comprehensive approach to differential diagnosis, helping them accurately identify conditions that may require referral to another healthcare provider. The seventh edition includes updated information on the latest diagnostic screening methods, providing step-by-step guidance on how to assess patients effectively and make appropriate referrals. The book emphasizes clinical decision-making and offers valuable insights into recognizing when a condition may fall outside the scope of physical therapy practice. This guide is essential for physical therapists who are looking to enhance their diagnostic skills and improve patient care.