<unk>  or<unk>  denotes a decreased sensitivity to painful stimuli.<unk>  occurs when nociceptive (painful) stimuli are interrupted or decreased somewhere along the path between the input (nociceptors), and the places where they are processed and recognized as pain in the conscious mind.<unk>  effects can be mild, such as massaging a stubbed toe to make it hurt less or taking aspirin to decrease a headache, or they can be severe, like being under strong anesthesia.<unk>  can be caused by exogenous chemicals such as opioids, as well as by chemicals produced by the body in phenomena such as fear- and exercise- induced<unk> .<unk>  can also be associated with diseases, such as CIPA or in less severe cases with diabetes or other diseases associated with hypertension.
Hypoalgesia
Hyperalgesia
Spasticity
Dysesthesia
Hypoesthesia
Synesthesia
Decompensation
Hyperreflexia