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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