Paresthesias: numbness or tingling
Dysesthesias: electric shock phenomenon
Hyperesthesia: increased sensitivity to mild painful stimuli
Hyperpathia: pain produced by subthreshold stimuli
Hyperalgesia: increased sensitivity to normally painful stimuli
Allodynia: pain produced by normally non-painful stimuli
Phantom pain: perceived to arise from a body part that has been amputated
Wind-up phenomenon: repeated stimulation of peripheral C fibers → increased action potentials at dorsal horn → amplified response to pain .
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