- non-noxious stim -> pain
- Hyperalgesia : oversensibive to noxious stimulation
- Hyperpathia : increased response w/h delayed onset & an arterresponse
- Analgesia : noxious stimulation에 대한 반응이 없다.
- Anesthesia : noxious & nonnoxious 모두 반응 안함
- Complete congenital insensitivity to pain
- Central pain : thalamic pain, phantom pain, anesthesia dolorosa
- thalamic pain - lesions in the thalamus (VB)