Tactile discrimination, but not tactile stimulation alone, reduces chronic limb pain

摘要: Chronic pain is often associated with reduced tactile acuity. A relationship exists between intensity, acuity and cortical reorganisation. When resolves, function improves organisation normalises. Tactile can be improved in healthy controls when stimulation a behavioural objective. We hypothesised that, patients chronic limb decreased acuity, discriminating stimuli would decrease increase but alone not. Thirteen complex regional syndrome (CRPS) of one underwent waiting period then approximately 2 weeks under two conditions: or discrimination according to their diameter location. There was no change (100 mm VAS) two-point (TPD) during no-treatment period, nor the phase (p > 0.32 for both). Pain TPD were lower after [mean (95% CI) effect size VAS = 27 (14-40 mm) 5.7 (2.9-8. ), p < 0.015 both]. These gains maintained at three-month follow-up. conclude that are required discriminate type location stimuli.