Know when to treat and when to refer with this invaluable guide to differential diagnosis. In order to provide safer, more effective care for every patient referred to you, this valuable resource enables you to recognize: Red flag histories, risk factors, and signs and symptoms that signal the need for referral Underlying medical conditions that may produce symptoms similar to a neuromuscular or musculoskeletal problem Specific dysfunctions or human movement impairments that do require physical therapy Companion CD includes tools to use in the practice setting.