Hyperalgesia

Hyperalgesia

Hyperalgesia is the exaggerated perception of pain from a stimulus which is normally painful (cf. allodynia). This may result from sensitization of nociceptors (paradoxically this may sometimes be induced by morphine) or abnormal ephaptic cross-excitation between primary afferent fibers.

 

Cross References

Allodynia; Dysesthesia; Hyperpathia