PHRM 211 Lecture Notes - Lecture 13: Postherpetic Neuralgia, Trigeminal Neuralgia, Myofascial Pain Syndrome
Document Summary
May be paroxysmal (sudden attacks or fluctuations) Allodynia pain induced by a normally non-painful stimulus (e. g. light touch) Hyperalgesia increased pain response to a normally painful stimulus. Hyperpathia exaggerated responses to painful stimuli with continuing pain sensation after the stimulation has ceased. Organ or smooth muscle injury (often acute but can be chronic) Nerve damage and/or abnormal transmission of nerve signals. Narrowing of spinal canal affecting nervous system function. Normal degenerative pathology common, both symptomatic and asymptomatic. Common and often natural degeneration of spinal column. Travels down the leg (back, outside, or front of leg) Often worsened by specific positions or activities. Causes: disc herniation, piriformis syndrome, spinal stenosis, spondylolisthesis. Impingement or irritation of sciatic nerve by the piriformis muscle. Some believe it to be a myofascial pain disorder. Pain, numbness, or tingling in lower leg associated with prolonged activity in a standing or walking condition (often a complication of spinal stenosis or inflammation)
