slow pain


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slow pain

an unpleasant sensory experience that travels a multisynaptic route to the brain via slow-conducting, non-myelinated nerve fibers.

slow pain

Pain that is perceived a second or more after a stimulus. It is transmitted to the central nervous system by C (nerve) fibers, which are not myelinated, and therefore conduct sensations more slowly than A delta fibers. Slow pain lasts longer than sudden pain. It is usually perceived by patients as burning, cramping, dull, itchy, or warm.
See also: pain

pathophysiological pain

; second pain; slow pain pain that encourages healing by inducing protective behaviours; it originates from stimulation of high-threshold polymodal nociceptors (free nerve endings, present in all tissues and responsive to mechanical, chemical and thermal stimuli) and is transmitted along slow-conduction C fibres (which also induce emotional and behavioural responses to pain via thalamic connections, and activate inhibitory pain pathways and the release of endogenous opioids)