The traditional Chinese explanation of Acupuncture is that channels of energy (meridians) run in regular patterns throughout the body. An obstruction in the flow of energy in the meridians can cause pain or disharmony.

Inserting very fine, sterile needles or applying heat at precise Acupuncture points can influence the meridians. Acupuncture needles unblock obstruction and re-establish regular energy (Qi) flow throughout the body, which can affect problems on the surface, in the extremities, and influence internal organ functions.

Acupuncture Diagnosis and Treatment
During the initial consultation, the acupuncturist determines the nature of the disharmony of the patient by careful questioning and observation.
A detailed understanding of the patient's present symptoms, past medical and family history, lifestyle and diet, and of all the systems in the body such as digestion, circulation, sleep, etc. is required. Diagnosis also includes examination of the tongue for its structure, color, and coating and of the pulses at the wrists, which are felt for their quality, rhythm, and strength.
What the practitioner is looking for are not symptoms in isolation, but rather a pattern into which is woven a total picture of the patient. Having decided on the cause(s) of the problem, the acupuncture points and appropriate method of treatment are selected according to various rules governing the movement of energy within the body.

Treatment
During acupuncture treatment, hair-thin needles are inserted and left in place for up to 50 minutes, depending on the effect required. During this time there may be a heavy sensation in the limbs and a pleasant feeling of relaxation.
Acupuncture needles are very thin and solid. They are not designed to cut the skin, but to displace the skin and stimulate areas beneath. Needles are sterile and disposable. Depending on the treatment plan, from one to several dozen needles could be inserted in various points.
Other methods of treating acupuncture points include massage (acupressure) or moxabustion.
Treatment with acupuncture can produce rapid results but more often it requires a number of treatments over a period of time. Usually treatments are once or twice a week, but they can be less frequent. Sometimes the effect is quite dramatic and the patient will only need one or two treatments. Sometimes the effect is subtle for the more chronic conditions and may require treatment for several months. There is, however, usually a noticable change over time.
Additional adjunct therapies used in conjunction with acupuncture.
The Sensation of Acupuncture
People experience acupuncture differently, but most feel minimal pain as the needles are inserted. Some people are energized by treatment, while others feel relaxed. When the needles are properly placed, a Qi or energy sensation can often be perceived. People experience this sensation differently, and it has been described as heavy, tingling, distending, warm, radiating, or spreading. The intensity of this sensation can be modulated to best suit your needs and comfort level.