| Term 
 | Definition 
 
        | perception of an ordinarily nonnoxious stimulus as pain |  | 
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        | Term 
 | Definition 
 
        | absence of pain perception |  | 
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        | Term 
 | Definition 
 | 
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        | Term 
 | Definition 
 
        | pain in an area that lacks sensation |  | 
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        | Term 
 | Definition 
 
        | unpleasant or abnormal sensation with or without a stimulus |  | 
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        | Term 
 | Definition 
 
        | diminished response to noxious stimulation |  | 
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        | Term 
 | Definition 
 
        | increased response to noxious stimulatin |  | 
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        | Term 
 | Definition 
 
        | increased response to mild stimulation |  | 
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        | Term 
 | Definition 
 
        | presence of hyperesthesia, allodyna, and hyperalgesia usually associated with overreaction and persistence of the sensation after the stimulus |  | 
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        | Term 
 
        | hypesthesia (hypoesthesia) |  | Definition 
 
        | reduced cutaneous sensation |  | 
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        | Term 
 | Definition 
 
        | pain in the distribution of a nerve or a group of nerves |  | 
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        | Term 
 | Definition 
 
        | abnormal sensation perceived without an apparent stimulus |  | 
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        | Term 
 | Definition 
 
        | functional abnormailty of one or more nerve roots |  | 
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        | Term 
 | Definition 
 | 
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        | Term 
 | Definition 
 
        | substantia gelatinosa- contains many interneurons, connects afferent and efferent neurons n neural pathways -processes and modulates nociceptive imput from the periphery
 -opiod action site
 |  | 
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        | Term 
 | Definition 
 
        | receives non-nociceptive sensory imput |  | 
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        | Term 
 | Definition 
 
        | receives non-nociceptive sensory imput |  | 
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        | Term 
 | Definition 
 
        | WDRN-protopathic and epicritic |  | 
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        | Term 
 | Definition 
 
        | intermediolateral column contains preganglionic sympathetic neurons |  | 
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        | Term 
 | Definition 
 
        | receives non-nociceptive sensory imput |  | 
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        | Term 
 | Definition 
 
        | ventral anterior horn motor |  | 
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        | Term 
 | Definition 
 
        | anterior horn (motor) ventral |  | 
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        | Term 
 | Definition 
 
        | very small neurons surrounding the central canal-- pain, temperature, visceral sensation |  | 
        |  |