Physiotherapists. The first investigation of the physiotherapist will be into the location and kind of pain. It is vital to understand if the pain is specific to one spot or whether it also affects other parts of the body. For example, if the pain is intense and specific the physiotherapist would surmise that the cause may be poor posture or a kind of degenerative problem; on the other hand, a referred pain may suggest a pinched nerve or a problem elsewhere.