Which Side to Needle: Opposite-Side and Same-Side Needling in the Balance Method
The Question That Comes Up After the Course
On a course, the rule sounds simple. The complaint is on the right, so you needle on the left.
Then a patient arrives with both knees sore, or a cast on the opposite arm, or pain that sits on the midline. Which side now? And when is the same side allowed?
This guide traces opposite-side needling to its classical source and explains how Dr Tan's Balance Method decides the side, which depends on the system you choose.
The Classical Source in the Neijing
Crossed needling is far older than any modern system. Its main classical source is chapter 63 of the Suwen, the Miu Ci Lun, usually translated as the treatise on crossed needling.
The chapter describes two kinds of crossed needling. Both treat the left for the right and the right for the left.
Miu ci (繆刺) is needling of the collaterals. The chapter describes a pathogen lodged in the great collaterals that has not entered the main channel. Because the collaterals cross from one side to the other, the pain can show on one side while the disturbance sits on the other. The chapter explains the name this way. In a collateral disorder, the pain does not sit where the channel itself is affected.
Ju ci (巨刺) is needling of the main channel. Here the pathogen has entered the channel itself, and an excess on one side shows as illness on the other. The chapter says this calls for ju ci, and that the needle must reach the channel, not the collateral. The Lingshu also lists ju ci among its needling methods, again as left for right and right for left.
Behind both is one idea. The left and right channels communicate, so one side can be reached through the other. Acupuncturists in many traditions have relied on that idea since.
In the Balance Method, the System Decides the Side
Dr Han calls "same side or opposite side?" the number one question from Acupuncturists new to the method. Her answer is that the side follows from the system you choose. When she teaches each system, she covers where it comes from, how it relates to the affected channel, and whether it is needled on the opposite side or the same side.
So the order of decisions matters. First identify the affected channel. Then choose a system to balance it, and the system tells you the side. Then imaging and mirroring place the needle on the balancing channel. The five systems guide and the imaging and mirroring guide cover those steps.
Some systems require the opposite side. Others can be needled on either side. In Dr Han's teaching, the first, third and fifth systems go on the opposite side, and the second, fourth and sixth on either side. The second is the branching relationship (Bie Jing). The sixth is a channel balancing itself, which she calls system number six.
Where a system needs the opposite side, the clinical reasons are easy to see. With no needles in the affected area, the patient can move it and the Acupuncturist can palpate it during the treatment. The area itself may also be swollen, very tender or recently injured.
Choosing a Side for Practical Reasons
Because there are several systems, there is usually more than one way to reach the affected channel, and practical needs can guide the choice. Dr Han's chart notes give examples. If a patient is right-handed, you might choose points on the left so they keep the use of their right hand. If their clothing only allows access to the hands and feet, or they are in a wheelchair, you can choose a system that works there.
When either side is valid, she is open about how small the deciding factor can be. Standing beside a volunteer in class, she said, "I'll just needle right here because I don't have to walk. That's the decision-making."
Palpation can also decide it. Telling the story of one of Dr Tan's cases, she described checking both sides first: "I found out the same side has more pain than the other side. Then I decided I'm going to do the same side."
The same reasoning applies when the opposite limb can't be needled, because of a cast, a wound, an amputation, or a medical reason to avoid it. There are many ways to mirror and image, so another system or limb is usually available, and the scalp is another option.
Bilateral Complaints and Pain That Moves
When the complaint is on both sides, Dr Han's groin pain post gives two options. You can needle both sides, or you can choose a system that can be needled on either side and needle only one.
If the pain moves during treatment, the treatment moves with it. Dr Han calls this chasing the pain. You reassess, identify the channel the pain now sits on, and balance that one.
Practical Considerations
Needle count. The method aims for the fewest needles the reasoning supports. Each needle should have a reason you can state.
Patient position. Because the needles are distal, you can choose a position that leaves the affected area free to move.
Checking the area. Before needling, note the range of movement and where it is tender. After each needle, ask the patient to move and palpate again. What you find decides the next step, which may be adjusting the needle, adding another system, or stopping there.
Depth. Needle depth follows how deep the condition is. Dr Han asks the patient directly: "Do you think the pain is deep inside? Or is it superficial?"
Location. On a distal channel, small differences in location, depth and angle matter. Those details are the hardest to learn from a chart.
A Note on the Research
Opposite-side needling has been studied mainly in stroke rehabilitation, which is a different setting from most Balance Method work. A 2010 systematic review in BMC Complementary and Alternative Medicine compared contralateral and same-side Acupuncture after stroke. It found eight randomised trials. The authors described the evidence as limited, noted that the trials were few and at high risk of bias, and called for better trials. None of the trials tested the Balance Method.
Practising It Under Supervision
Deciding the side is one of many small judgements in a Balance Method treatment, and like the others it is easiest to learn by watching it made on real patients.
Module 1, Dr Tan's Core Essentials, runs in Brisbane on 16–18 April 2027. Dr Eileen Han teaches it after 20 years at Dr Tan's side, 15 of them helping run his clinic. The three days cover the five systems, imaging and mirroring, and more than 12 live patient demonstrations, with 19.5 CPD points recognised by AACMA and ACUNZ.
If you read Mandarin, the record of Dr Han's Balance Method in Action webinar describes how she assessed and adjusted live cases.