KINESIOL 2G03 Lecture Notes - Lecture 23: Neuropathic Pain, Threshold Of Pain, Hyperalgesia
2 Apr 2016
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Document Summary
Case study: when girl is touched with feather, feels like pain from blowtorch. A minor sprain to the wrist can lead to chronic pain. There is tissue healing, but lasting neural damage (peripheral). Pain that persists after healing has occurred. Neuropathic pain can be stimulus evoked or spontaneous: nociceptive pain: physiological response to tissue damage, neuropathic pain: not the result of tissue damage but changes in nervous system (spontaneous) - chronic. Dysfunctional activity at the periphery, spinal cord and cortex. Periphery: increased sensitivity to painful stimuli after injury has healed, hyperalgesia: heightened sensitivity in the periphery to stimulus not normally painful. Threshold lowers, less painful stimulation to activate c-fibres: diffuse mechanical hyperalgesia induced by focal burn. 3) determined pain thresholds at 3 different spots. Lower threshold after mechanical pinprick: lower pain to activated threshold, spread to surrounding areas of inflammation.
