Kristen Sparrow • April 19, 2010
I’ve been meaning to write about this interesting study that was presented at the Society for Acupuncture Research Meeting in North Carolina in March. I had met the author at previous meetings and had the opportunity to speak with him at length at the poster session. Apparently he’s on his way to Harvard to do some work there. There is a center of gravity of acupuncture research starting to develop at Harvard and it’s all for the good. At the epicenter is Vitaly Napadow who has done incredible work in staggering amounts on fMRI and acupuncture and other topics. He presented at the SAR also and cited my paper (had to mention that…) Turns out there is a U.C. Berkeley alum (like me),Andrew Ahn, who is headed to Harvard also who presented an interesting paper on “wavelet analysis” which is something I tried to do for awhile with my own data. Still haven’t cracked that.
So I’ve digressed.
This study shows that acupuncture helps prevent flares of acupuncture and also the actual wheal and flare after provoked eczema. They compared verum acupuncture (VA) puncture at points Large Intestine 11, and Spleen 10 to “no acupuncture” (NA) and placebo acupuncture (PA.) Verum acupuncture significantly lowered the itching and wheal and flare associated with eczema. Details in the abstract.
Influence of acupuncture on type I hypersensitivity itch and the wheal and flare response in adults with atopic eczema – a blinded, randomized, placebo-controlled, crossover trial.
Pfab F, Huss-Marp J, Gatti A, Fuqin J, Athanasiadis GI, Irnich D, Raap U, Schober W, Behrendt H, Ring J, Darsow U.
Department of Dermatology and Allergy, Technische Universität München, Munich, Germany.
Background: Itch is a major symptom of allergic skin disease. Acupuncture has been shown to exhibit a significant effect on histamine-induced itch in healthy volunteers. We investigated the effect of acupuncture on type I hypersensitivity itch and skin reaction in a double-blind, randomized, placebo-controlled, crossover trial. Methods: An allergen stimulus (house dust mite or grass pollen skin prick) was applied to 30 patients with atopic eczema before (direct effect) and after (preventive effect) two experimental approaches or control observation: acupuncture at points Quchi and Xuehai [verum acupuncture (VA), dominant side], ‘placebo-point’ acupuncture (PA, dominant side), no acupuncture (NA). Itch intensity was recorded on a visual analogue scale. After 10 min, wheal and flare size and skin perfusion (via LASER-Doppler) were measured at the stimulus site, and the validated Eppendorf Itch Questionnaire (EIQ) was answered. Results: Mean itch intensity was significantly lower in VA (35.7 +/- 6.4) compared to NA (45.9 +/- 7.8) and PA (40.4 +/- 5.8) regarding the direct effect; and significantly lower in VA (34.3 +/- 7.1) and PA (37.8 +/- 5.6) compared to NA (44.6 +/- 6.2) regarding the preventive effect. In the preventive approach, mean wheal and flare size were significantly smaller in VA (0.38 +/- 0.12 cm(2)/8.1 +/- 2.0 cm(2)) compared to PA (0.54 +/- 0.13 cm(2)/13.5 +/- 2.8 cm(2)) and NA (0.73 +/- 0.28 cm(2)/15.1 +/- 4.1 cm(2)), and mean perfusion in VA (72.4 +/- 10.7) compared to NA (84.1 +/- 10.7). Mean EIQ ratings were significantly lower in VA compared to NA and PA in the treatment approach; and significantly lower in VA and PA compared to NA in the preventive approach. Conclusions: Acupuncture at the correct points showed a significant reduction in type I hypersensitivity itch in patients with atopic eczema. With time the preventive point-specific effect diminished with regard to subjective itch sensation, whereas it increased in suppressing skin-prick reactions.