Counter irritants applied to decrease pain by action on
Spatial summation
Inhibition of pain pathways in the dorsal horn gate
Pain receptor saturation
Dorsal root ganglia
(B) Inhibition of pain pathways in the dorsal horn gate # Central Inhibition & Counterirritants> Stimulation with an electric vibrator at the site of pain also gives some relief. The relief is due primarily to inhibition of pain path- ways in the dorsal horn gate by stimulation of large-diameter touch-pressure afferents.> The same mechanism is probably responsible for the efficacy of counterirritants.> Stimulation of the skin over an area of visceral inflammation produces some relief of the pain due to the visceral disease.> The old-fashioned mustard plaster works on this principle.
Nervous System