NEUROPHYSIOLOGY OF NOCICEPTION AND PAIN PERCEPTION: A PHYSIOTHERAPY PERSPECTIVE

Abstract

Pain is a multifaceted, intricate sensation that is impacted by interactions between social, psychological, and biological elements. Evidence-based physiotherapy practice requires a thorough grasp of the neurophysiology of nociception and pain perception. The architecture and physiology of the nociceptive system, including nociceptors, peripheral nerve fibers, ascending and descending pain pathways, and the brain regions involved in pain processing, are reviewed in this chapter. In addition to the role of neuroplasticity, peripheral sensitization, central sensitization, synaptic plasticity, and neuroimmune interactions in the development of chronic pain, it covers the neurophysiological mechanisms of pain, including transduction, transmission, regulation, and perception. The chapter also describes how pain processes are classified into nociceptive, neuropathic, nociplastic, and mixed pain, and it emphasizes thorough pain evaluation techniques utilized in physical therapy. Lastly, it highlights mechanism-based physiotherapy interventions with applications in acute and chronic pain, musculoskeletal disorders, neurological conditions, and postoperative rehabilitation. These include pain neuroscience education, therapeutic exercise, manual therapy, electrotherapy, motor control retraining, and biopsychosocial management. Physiotherapists may create patient-centred, evidence-based rehabilitation programs that maximize pain management and functional recovery by having a thorough understanding of these ideas.