For many years, patients needed to receive a diagnosis from a medical professional in order to pursue physical therapy. However, in the 1980s, this process began to shift, as the abilities of physical therapists to diagnose and treat movement dysfunction gradually became more recognized and established. Today, physical therapists can offer their own type of diagnosis, which differs from a medical doctor’s medical diagnosis, but which can be a powerful tool in the development and implementation of an effective, customized approach to injury, mobility issues, and pain. This PT approach is called functional diagnosis.
What does a physical therapist diagnose?
A functional diagnosis, as its name implies, is a diagnosis of the function, or movement-related, problems that underlie a patient’s symptoms. A physical therapist’s functional diagnosis differs from a medical diagnosis in two important ways. First, it is delivered by a physical therapist, not a physician. Second, it is rooted in movement and not in disease. Often, the physical therapist’s diagnosis describes the effects of the medical diagnosis delivered by the physician. For example, a physical therapist may deal with the range of movement limitations that occur as the result of a torn ligament, or address the gait and balance training necessary to help a patient manage their Parkinson’s disease. In each case, the PT concerns themselves with the function of the body and the ways in which that function is impaired.What does a doctor diagnose?
A medical doctor, or physician, on the other hand, provides a medical diagnosis that addresses the condition that is causing the patient’s symptoms. The deal primarily in diseases, injuries, and chronic conditions that can inhibit a patient’s health and wellbeing. Using the examples above, a doctor would provide the diagnosis of a torn ligament, or of Parkinson’s disease. These diagnoses describe the underlying cause of the patient’s symptoms, and can only be made by a qualified physician. PTs must only deliver functional diagnoses, and physicians must only provide medical diagnoses.


