<unk>  is a clinical symptom of certain neurological disorders wherein the patient experiences a greatly exaggerated pain sensation to nociceptive stimuli. This can be contrasted from allodynia in which the patient feels painful sensations from stimuli which are not painful to normal individuals.
Hyperpathia
Hyperactivity
Sedation
Somnolence
Agitation 
Snatiation
Diaphoresis
Pallor