Dredging meridians is actually dissolving Qi stagnation, because meridians are the channels of Qi. When meridians are opened, Qi would run smoothly. In TCM there is a famous saying- ‘Stagnation leads to pain’, so the most typical manifestation of meridian blockage is pain, such as headache, back and leg pain, etc., which are all of the same cause.
When treating these diseases, I often perform acupuncture on corresponding acupoints first, and then moxibustion. Moxibustion features heat and dispersion, the acupuncture needles could conduct heat into the body, thus allowing heat to dissolve stagnated Qi in meridians. Once the meridians are dredged, Qi and Blood can reach the viscera, just like farmland being adequately irrigated, and diseases would heal naturally.
Moxibustion* of the following acupoints would treat back pain:
*Severe adverse effect may occur, one should not perform any type of moxibustion without instruction of person of rich experience or professional.