Acupuncture - Alternative Medicine
Acupuncture (from Lat. acus, "needle" (noun), and pungere, "prick" (verb)) is a technique of inserting and manipulating filiform needles into "acupuncture points" on the body with the aim of restoring health and well-being, e.g. treating pain. The definition and characterization of these points is standardized by the World Health Organization (WHO). Acupuncture is thought to have originated in China and is most commonly associated with Traditional Chinese medicine (TCM). Different types of acupuncture (Japanese, Korean, and classical Chinese acupuncture) are practiced and taught throughout the world.
Scientists are studying the mechanisms and efficacy of acupuncture. According to the protocols of evidence-based medicine, there is good evidence that acupuncture is effective in treating nausea and chronic low back pain, and moderate evidence for neck pain and headache. The WHO, the National Center for Complementary and Alternative Medicine (NCCAM) of the National Institute of Health (NIH), the American Medical Association (AMA) and various government reports have also studied and commented on the efficacy of acupuncture. There is general agreement that acupuncture is at least safe when administered by well-trained practitioners, and that further research is warranted.
Traditional Chinese medicine's acupuncture theory predates use of the scientific method, and has received various criticisms based on scientific thinking. There is no known anatomical or histological basis for the existence of acupuncture points or meridians. Acupuncturists tend to perceive TCM concepts in functional rather than structural terms, i.e. as being useful in guiding evaluation and care of patients. Neuroimaging research suggests that certain acupuncture points have distinct effects that are not otherwise predictable anatomically.
Traditional theory
Chinese medicine is based on a different paradigm from scientific biomedicine. Its theory holds the following explanation of acupuncture:
Acupuncture treats the human body as a whole that involves several "systems of function" that are in some cases loosely associated with (but not identified on a one-to-one basis with) physical organs. Some systems of function, such as the "triple heater" (San Jiao, also called the "triple burner") have no corresponding physical organ, rather, represents the various jiaos or levels of the [ventral cavity http://training.seer.cancer.gov/module_anatomy/unit1_3_terminology3_cavities.html] (upper, middle and lower). Disease is understood as a loss of balance between the yin and yang energies, which bears some resemblance to homeostasis among the several systems of function, and treatment of disease is attempted by modifying the activity of one or more systems of function through the activity of needles, pressure, heat, etc. on sensitive parts of the body of small volume traditionally called "acupuncture points" in English, or "xue" (cavities) in Chinese. This is referred to in TCM as treating "patterns of disharmony".
Treatment of acupuncture points may be performed along several layers of pathways, most commonly the twelve primary pathways meridians, located throughout the body. Other pathways include the Eight Extraordinary Pathways Qi Jing Ba Mai, the Luo Vessels, the Divergents and the Sinew Channels. Unaffiliated, or tender points, called "ah shi" (signifying "that's it", "ouch", or "oh yes") are generally used for treatment of local pain. Of the eight extraordinary pathways, only two have acupuncture points of their own. The other six meridians are "activated" by using a master and couple point technique which involves needling the acupuncture points located on the twelve main meridians that correspond to the particular extraordinary pathway. Ten of the primary pathways are named after organs of the body (Heart, Liver, etc.), one is named for the serous membrane that wraps the heart (Heart Protector or Pericardium), the last is the 'three spaces' (San Jiao). The pathways are capitalized to avoid confusion with a physical organ (for example, we write the "Heart meridian" as opposed to the "heart meridian"). The two independent extraordinary pathways Ren Mai and Du Mai are situated on the midline of the anterior and posterior aspects of the trunk and head respectively. The twelve primary pathways run vertically, bilaterally, and symmetrically and every channel corresponds to and connects internally with one of the twelve Zang Fu ("organs"). This means that there are six yin and six yang channels. There are three yin and three yang channels on each arm, and three yin and three yang on each leg.
The three yin channels of the hand (Lung, Pericardium, and Heart) begin on the chest and travel along the inner surface (mostly the anterior portion) of the arm to the hand.
The three yang channels of the hand (Large intestine, San Jiao, and Small intestine) begin on the hand and travel along the outer surface (mostly the posterior portion) of the arm to the head.
The three yin channels of the foot (Spleen, Liver, and Kidney) begin on the foot and travel along the inner surface (mostly posterior and medial portion) of the leg to the chest or flank.
The three yang channels of the foot (Stomach, Gallbladder, and Bladder) begin on the face, in the region of the eye, and travel down the body and along the outer surface (mostly the anterior and lateral portion) of the leg to the foot.
The movement of qi through each of the twelve channels is comprised of an internal and an external pathway. The external pathway is what is normally shown on an acupuncture chart and it is relatively superficial. All the acupuncture points of a channel lie on its external pathway. The internal pathways are the deep course of the channel where it enters the body cavities and related Zang-Fu organs. The superficial pathways of the twelve channels describe three complete circuits of the body, chest to hands, hands to head, head to feet, feet to chest, etc.
The distribution of qi through the pathways is said to be as follows (the based on the demarcations in TCM's Chinese Clock): Lung channel of hand taiyin to Large Intestine channel of hand yangming to Stomach channel of foot yangming to Spleen channel of foot taiyin to Heart channel of hand shaoyin to Small Intestine channel of hand taiyang to Bladder channel of foot taiyang to Kidney channel of foot shaoyin to Pericardium channel of hand jueyin to San Jiao channel of hand shaoyang to Gallbladder channel of foot shaoyang to Liver channel of foot jueyin then back to the Lung channel of hand taiyin. Each channel occupies two hours, beginning with the Lung, 3AM-5AM, and coming full circle with the Liver 1AM-3AM.
Chinese medical theory holds that acupuncture works by normalizing the free flow of qi (a difficult-to-translate concept that pervades Chinese philosophy and is commonly translated as "vital energy"), blood and body fluids (jin ye) throughout the body. Pain or illnesses are treated by attempting to remedy local or systemic accumulations or deficiencies. Pain is considered to indicate blockage or stagnation of the flow of qi, blood and/or fluids, and an axiom of the medical literature of acupuncture is "no pain, no blockage; no blockage, no pain". The delicate balance between qi and blood is of primary concern in Chinese medical theory, hence the axiom blood is the mother of qi, and qi is the commander of blood. Both qi and blood work together to move (qi) and to nourish (blood) the body fluids.
Many patients claim to experience the sensations of stimulus known in Chinese as "deqi" ("obtaining the qi" or "arrival of the qi"). This kind of sensation was historically considered to be evidence of effectively locating the desired point. There are some electronic devices now available which will make a noise when what they have been programmed to describe as the "correct" acupuncture point is pressed.
The acupuncturist decides which points to treat by observing and questioning the patient in order to make a diagnosis according to the tradition which he or she utilizes. In TCM, there are four diagnostic methods: inspection, auscultation and olfaction, inquiring, and palpation (Cheng, 1987, ch. 12). Inspection focuses on the face and particularly on the tongue, including analysis of the tongue size, shape, tension, color and coating, and the absence or presence of teeth marks around the edge. Auscultation and olfaction refer, respectively, to listening for particular sounds (such as wheezing) and attending to body odor. Inquiring focuses on the "seven inquiries", which are: chills and fever; perspiration; appetite, thirst and taste; defecation and urination; pain; sleep; and menses and leukorrhea. Palpation includes feeling the body for tender "ashi" points, and palpation of the left and right radial pulses at two levels of pressure (superficial and deep) and three positions Cun, Guan, Chi(immediately proximal to the wrist crease, and one and two fingers' breadth proximally, usually palpated with the index, middle and ring fingers). Other forms of acupuncture employ additional diagnosic techniques. In many forms of classical Chinese acupuncture, as well as Japanese acupuncture, palpation of the muscles and the hara (abdomen) are central to diagnosis.
History
In China, the practice of acupuncture can perhaps be traced as far back as the stone age, with the Bian shi, or sharpened stones. Clearer evidence exists from the 1st millennium BCE, and archeological evidence has been identified with the period of the Han dynasty (202 BC–220 AD). Forms of it are also described in the literature of traditional Korean medicine where it is called chimsul. It is also important in Kampo, the traditional medicine system of Japan.
Recent examinations of Ötzi, a 5,000-year-old mummy found in the Alps, have identified over 50 tattoos on his body, some of which are located on acupuncture points that would today be used to treat ailments Ötzi suffered from. Some scientists believe that this is evidence that practices similar to acupuncture were practised elsewhere in Eurasia during the early bronze age. According to an article published in The Lancet by Dorfer et al., "We hypothesised that there might have been a medical system similar to acupuncture (Chinese Zhenjiu: needling and burning) that was practised in Central Europe 5,200 years ago... A treatment modality similar to acupuncture thus appears to have been in use long before its previously known period of use in the medical tradition of ancient China. This raises the possibility of acupuncture having originated in the Eurasian continent at least 2000 years earlier than previously recognised."
Acupuncture's origins in China are uncertain. The earliest Chinese medical texts (Ma-wang-tui graves, 68 BC) do not mention acupuncture. The Chinese medical text that first describes acupuncture is the Yellow Emperor’s Classic of Internal Medicine (History of Acupuncture) Huangdi Neijing, which was compiled around 305–204 B.C. Some hieroglyphics have been found dating back to 1000 B.C. that may indicate an early use of acupuncture. Bian stones, sharp pointed rocks used to treat diseases in ancient times, have also been discovered in ruins; some scholars believe that the bloodletting for which these stones were likely used presages certain acupuncture techniques.
R.C. Crozier in the book Traditional medicine in modern China (Harvard University Press, Cambridge, 1968) says the early Chinese Communist Party expressed considerable antipathy towards classical forms of Chinese medicine, ridiculing it as superstitious, irrational and backward, and claiming that it conflicted with the Party’s dedication to science as the way of progress. Acupuncture was included in this criticism. Reversing this position, Communist Party Chairman Mao later said that "Chinese medicine and pharmacology are a great treasure house and efforts should be made to explore them and raise them to a higher level."
Representatives were sent out across China to collect information about the theories and practices of Chinese medicine. Traditional Chinese Medicine is the formalized system of Chinese medicine that was created out of this effort. TCM combines the use of acupuncture, Chinese herbal medicine, tui na, and other modalities. After the Cultural Revolution, TCM instruction was incorporated into university medical curricula under the "Three Roads" policy, wherein TCM, biomedicine, and a synthesis of the two would all be encouraged and permitted to develop. After this time, forms of classical Chinese medicine other than TCM were outlawed, and some practitioners left China.
The first forms of acupuncture to reach the United States were brought by non-TCM practitioners, many employing styles that had been handed down in family lineages, or from master to apprentice (collectively known as "Classical Chinese Acupuncture").
In Vietnam, Dr. Van Nghi and colleagues used the classical Chinese medical texts and applied them in clinical conditions without reference to political screening. They rewrote the modern version: Trung E Hoc. Van Nghi was made the first President of the First World Congress of Chinese Medicine at Bejing in 1988 in recognition of his work.
Clinical practice
Most modern acupuncturists use disposable stainless steel needles of fine diameter (0.007" to 0.020", 0.18 mm to 0.51 mm), sterilized with ethylene oxide or by autoclave. These needles are far smaller in diameter (and therefore less painful) than the needles used to give shots, since they do not have to be hollow for purposes of injection. The upper third of these needles is wound with a thicker wire (typically bronze), or covered in plastic, to stiffen the needle and provide a handle for the acupuncturist to grasp while inserting. The size and type of needle used, and the depth of insertion, depend on the acupuncture style being practised.
Warming an acupuncture point, typically by moxibustion (the burning of a combination of herbs, primarily mugwort), is a different treatment than acupuncture itself and is often, but not exclusively, used as a supplemental treatment. The Chinese term zhēn, commonly used to refer to acupuncture, comes from zhen meaning "needle", and jiu meaning "moxibustion". Moxibustion is still used in the 21st century to varying degrees among the schools of oriental medicine. For example, one well known technique is to insert the needle at the desired acupuncture point, attach dried moxa to the external end of an acupuncture needle, and then ignite it. The moxa will then smolder for several minutes (depending on the amount adhered to the needle) and conduct heat through the needle to the tissue surrounding the needle in the patient's body. Another common technique is to hold a large glowing stick of moxa over the needles. Moxa is also sometimes burned at the skin surface, usually by applying an ointment to the skin to protect from burns, though burning of the skin is general practice in China.
In western medicine, vascular headaches (the kind that are accompanied by throbbing veins in the temples) are typically treated with analgesics such as aspirin and/or by the use of agents such as niacin that dilate the affected blood vessels in the scalp, but in acupuncture a common treatment for such headaches is to stimulate the sensitive points that are located roughly in the center of the webs between the thumbs and the palms of the patient. These points are described by acupuncture theory as "targeting the face and head" and are considered to be the most important point when treating disorders affecting the face and head. The patient reclines, and the points on each hand are first sterilized with alcohol, and then thin, disposable needles are inserted to a depth of approximately 3-5 mm until a characteristic "twinge" is felt by the patient, often accompanied by a slight twitching of the area between the thumb and hand. Most patients report a pleasurable "tingling" sensation and feeling of relaxation while the needles are in place. The needles are retained for 15-20 minutes while the patient rests, and then are removed.
In the clinical practice of acupuncturists, patients frequently report one or more of certain kinds of sensation that are associated with this treatment, sensations that are stronger than those that would be felt by a patient not suffering from a vascular headache:
Extreme sensitivity to pain at the points in the webs of the thumbs.
In bad headaches, a feeling of nausea that persists for roughly the same period as the stimulation being administered to the webs of the thumbs.
Simultaneous relief of the headache. (See Zhen Jiu Xue, p. 177f et passim.)
Indications according to acupuncturists in the West
According to the American Academy of Medical Acupuncture (2004), acupuncture may be considered as a complementary therapy for these conditions:
Abdominal distention/flatulence*
Acute and chronic pain control*
Allergic sinusitis *
Anesthesia for high-risk patients or patients with previous adverse responses to anesthetics
Anorexia
Anxiety, fright, panic*
Arthritis/arthrosis *
Atypical chest pain (negative workup)
Bursitis, tendonitis, carpal tunnel syndrome*
Certain functional gastrointestinal disorders (nausea and vomiting, esophageal spasm, hyperacidity, irritable bowel) *
Cervical and lumbar spine syndromes*
Constipation, diarrhea *
Cough with contraindications for narcotics
Drug detoxification *
Dysmenorrhea, pelvic pain *
Frozen shoulder *
Headache (migraine and tension-type), vertigo (Meniere disease), tinnitus *
Idiopathic palpitations, sinus tachycardia
In fractures, assisting in pain control, edema, and enhancing healing process
Muscle spasms, tremors, tics, contractures*
Neuralgias (trigeminal, herpes zoster, postherpetic pain, other)
Paresthesias *
Persistent hiccups*
Phantom pain
Plantar fasciitis*
Post-traumatic and post-operative ileus *
Premenstrual syndrome
Selected dermatoses (urticaria, pruritus, eczema, psoriasis)
Sequelae of stroke syndrome (aphasia, hemiplegia) *
Seventh nerve palsy
Severe hyperthermia
Sprains and contusions
Temporo-mandibular joint derangement, bruxism *
Urinary incontinence, retention (neurogenic, spastic, adverse drug effect) *
* Also included in the World Health Organization list of acupuncture indications.
Views of Critics
One of the major criticisms of studies which purport to find that acupuncture is anything more than a placebo is that most such studies are not (in the view of critics) properly conducted. Many are not double blinded and are not randomised. However, double-blinding is not a trivial issue in acupuncture: since acupuncture is a procedure and not a pill, it is difficult to design studies in which the person providing treatment is blinded as to the treatment being given. The same problem arises in double-blinding procedures used in biomedicine, including virtually all surgical procedures, dentistry, physical therapy, etc.; the NIH Consensus Statement notes such issues with regard to sham acupuncture, a technique often used in studies purporting to be double-blinded. See also Criticism of evidence-based medicine. Tonelli, a prominent critic of EBM, argues that complementary and alternative medicine (CAM) cannot be EBM-based unless the definition of evidence is changed. Tonelli also says "the methods of developing knowledge within CAM currently have limitations and are subject to bias and varied interpretation. CAM must develop and defend a rational and coherent method for assessing causality and efficacy, though not necessarily one based on the results of controlled clinical trials."
In China, placebo-controlled studies are often not performed as it believed to be unethical to pretend to give patients bonafide treatment.
Some researchers argue that there is no evidence that acupuncture has any affect on the pathogenesis of viruses and microorganisms, or on human physiology, with the exception of the neurological pathways associated with the nerve cells that were stimulated by them. Thus, the most promising clinical application of acupuncture is in the area of pain control.
They argue that studies on acupuncture that meet scientific standards of experimentation have concluded two things: acupuncture is usually more effective than no treatment or a placebo in pill form, and that there is no significant difference in the effectiveness of acupuncture and “sham” acupuncture (needling performed superficially a/o at non-acupuncture sites), which is often used as a control. These researchers therefore conclude that acupuncture's effect is either caused by the tendency of extended, invasive procedures to generate more powerful placebo effects than pills or by the general stimulation of afferent nerve endings at the surface of the skin, causing the release of pain relieving biochemical compounds such as endorphins (this can also be done with jalapeno peppers, electricity, and various other form of stimulation). It may also be a combination of these two effects.
The vast majority of research on acupuncture is conducted by researchers in China, and Ernst et al. argue that there exist major flaws in the design of the experiments, as well as selective reporting of results, and conclude that no conclusions can be drawn from them. Some researchers argue that numerous experimental difficulties have prevented the conclusive establishment of a causative relationship (if it exists) between pain relief and the administration of acupuncture. These include the subjective nature of pain measurement and the pervasive influence of psychological factors such as suggestion, confirmation bias, and the distraction of being poked by a needle. Also, they argue, the tendency of chronic pain to ebb and flow on its own without any external intervention leads people to falsely perceive that the last measure they took before the pain subsided was the cause of the relief. This is a logical fallacy known as post hoc ergo propter hoc.
Safety and risks
Because acupuncture needles penetrate the skin, many forms of acupuncture are invasive procedures, and therefore not without risk. Injuries are rare among patients treated by trained practitioners.
Certain forms of acupuncture such as the Japanese Tōyōhari and Shōnishin often use non-invasive techniques, in which specially-designed needles are rubbed or pressed against the skin. These methods are common in Japanese pediatric use.
Common, minor adverse events
A survey by Ernst et al. of over 400 patients receiving over 3500 acupuncture treatments found that the most common adverse effects from acupuncture were:
Minor bleeding after removal of the needles, seen in roughly 3% of patients. (Holding a cotton ball for about one minute over the site of puncture is usually sufficient to stop the bleeding.)
Hematoma, seen in about 2% of patients, which manifests as bruises. These usually go away after a few days.
Dizziness, seen in about 1% of patients. Some patients have a conscious or unconscious fear of needles which can produce dizziness and other symptoms of anxiety. Patients are usually treated lying down in order to reduce likelihood of fainting.
The survey concluded: "Acupuncture has adverse effects, like any therapeutic approach. If it is used according to established safety rules and carefully at appropriate anatomic regions, it is a safe treatment method."
Other injury
Other risks of injury from the insertion of acupuncture needles include:
Nerve injury, resulting from the accidental puncture of any nerve.
Brain damage or stroke, which is possible with very deep needling at the base of the skull.
Pneumothorax from deep needling into the lung.
Kidney damage from deep needling in the low back.
Haemopericardium, or puncture of the protective membrane surrounding the heart, which may occur with needling over a sternal foramen (an undetectable hole in the breastbone which can occur in up to 10% of people).
Risk of terminating pregnancy with the use of certain acupuncture points that have been shown to stimulate the production of adrenocorticotropic hormone (ACTH) and oxytocin.
These risks are slight and can all be avoided through proper training of acupuncturists. For correct perspective, their risk should be compared to the level of side effects of common drugs and biomedical treatment - see below. Graduates of medical schools and (in the US) accreditated acupuncture schools receive thorough instruction in proper technique so as to avoid these events. (Cf. Cheng, 1987)
Risks from omitting orthodox medical care
Some doctors believe that receiving any form of alternative medical care without also receiving orthodox western medical care is inherently risky, since undiagnosed disease may go untreated and could worsen. For this reason many acupuncturists and doctors prefer to consider acupuncture a complementary therapy rather than an alternative therapy.
Critics also express concern that unethical or naive practitioners may induce patients to exhaust financial resources by pursuing ineffective treatment. However, many recent public health departments in modern countries have acknowledged the benefits of acupuncture by instituting regulations, ultimately raising the level of medicine practiced in these jurisdictions.
Safety compared to other treatments
Commenting on the relative safety of acupuncture compared to other treatments, the NIH consensus panel stated that "adverse side effects of acupuncture are extremely low and often lower than conventional treatments." They also stated:
"the incidence of adverse effects is substantially lower than that of many drugs or other accepted medical procedures used for the same condition. For example, musculoskeletal conditions, such as fibromyalgia, myofascial pain, and tennis elbow... are conditions for which acupuncture may be beneficial. These painful conditions are often treated with, among other things, anti-inflammatory medications (aspirin, ibuprofen, etc.) or with steroid injections. Both medical interventions have a potential for deleterious side effects but are still widely used and are considered acceptable treatments."
In a Japanese survey of 55,291 acupuncture treatments given over five years by 73 acupuncturists, 99.8% of them were performed with no significant minor adverse effects and zero major adverse incidents (Hitoshi Yamashita, Bac, Hiroshi Tsukayama, BA, Yasuo Tanno, MD, PhD. Kazushi Nishijo, PhD, JAMA). Two combined studies in the UK of 66,229 acupuncture treatments yielded only 134 minor adverse events. (British Medical Journal 2001 Sep 1). The total of 121,520 treatments with acupuncture therapy were given with no major adverse incidents (for comparison, a single such event would have indicated a 0.0008% incidence).
This is in comparison to 2,216,000 serious adverse drug reactions that occurred in hospitals 1994. (Lazarou J, Pomeranz BH, Corey PN., JAMA. 1998 Apr 15;279(15):1200-5.) So to compare indirectly, Acupuncture has a 0.2% chance of causing a minor adverse effect compared to prescription medications having a 6.7% chance of causing a serious adverse event in a hospital setting.
|
