Hyperalgesia Last edited and medically reviewed by Alaric Steinmetz on 26.12.2022 Synonyms Hyperalgesia Hyperalgesia is defined as increased sensitivity to pain1. In contrast, allodynia is pain caused by a nonpainful stimulus. References Sandkuhler, Jurgen. "Models and mechanisms of hyperalgesia and allodynia." Physiological reviews 89.2 (2009): 707-758. ↩ ↩