Traditional Pattern Differentiation in TCM
How traditional Chinese medicine groups a person's symptoms into patterns, how consistent practitioners are in doing it, and why it should not be self-applied.
Content last updated . This page has not been medically reviewed.
What pattern differentiation is
In traditional Chinese medicine (TCM), treatment is often chosen by "pattern" rather than only by a named disease. A study of acupuncture practice describes treating patients according to individual pattern diagnoses as an important feature of acupuncture rooted in TCM. [1] Patterns are groupings of signs and symptoms, such as excess, deficiency, or combined patterns, described in the tradition's own terms. [1] Two people with the same biomedical diagnosis may be given different patterns, and so different herbs or treatment points.This is a traditional way of organizing a consultation. It is not a biomedical diagnosis. The World Health Organization's ICD-11 includes an optional supplementary chapter, "Traditional medicine conditions", and says coding should always also include a category from the main chapters. [2]
How consistent is it?
Researchers have asked whether different practitioners reach the same pattern for the same person.| Study | What was done | What was found |
|---|---|---|
| Women with infertility, 2011 | Two acupuncturists independently assessed 54 women | 39 different patterns were used; moderate to fair agreement on excess/deficiency patterns; poor to no agreement on choice of acupuncture points [1] |
| Open clinic population, 2019 | Two or three practitioners diagnosed 35 people from a list of 56 common diagnoses | The authors concluded diagnostic agreement must be improved before treatment effects can be investigated on a valid basis [3] |
| Review, 2022 | Discussion of rules for pattern differentiation | Evidence-based rules are yet to be developed for specific conditions, and agreement among practitioners is unsatisfactory [4] |
Strength of evidence: mixed to limited. These were small studies, but together they suggest that two trained practitioners may reach different patterns for the same person. Some researchers are working on standardized, score-based rules, but these are still being developed. [4]
What this means for you
- Pattern labels are a practitioner's judgement within a framework, not a test result.
- Different practitioners can describe different patterns for you, and that does not by itself mean one is wrong or right.
- Ask any practitioner to tell you the biomedical diagnosis they are working from, if any, and what they would expect to change.
- We do not provide checklists for working out your own pattern. Self-diagnosis from symptom lists can miss serious conditions.
Who should seek conventional care first
New, severe, persistent or worsening symptoms need medical assessment before any traditional approach. NCCIH advises not using TCM to replace or delay conventional care and to tell all your providers about it. [5] For what a visit involves, see TCM Consultation. For the concepts behind patterns, see Traditional Concepts, and for how to choose a practitioner see TCM Qualifications, Licensing and Medical Care.Frequently asked questions
Is a TCM pattern the same as a medical diagnosis?
No. It is a traditional way of grouping symptoms and signs. [1] ICD-11's traditional medicine chapter is optional and is used alongside standard diagnosis chapters. [2]
Do two practitioners give the same pattern?
Not reliably in the studies we read: one study found 39 different patterns among 54 women, with moderate to fair agreement on broad types. [1]
Can I work out my own pattern?
We do not recommend it. Pattern assessment depends on a practitioner's judgement, and agreement between practitioners is itself limited. [4]
Does pattern-based treatment work better?
Proper evidence not found in the sources we checked comparing pattern-based with standard TCM treatment. Diagnostic agreement needs improvement before such comparisons are reliable. [3]
References
- Low inter-rater reliability in traditional Chinese medicine for female infertility. Acupuncture in Medicine 2011. PubMed 21245237. Read 2026-10-22.
- World Health Organization. ICD-11 and traditional medicine. Read 2026-10-22.
- Consensus in traditional Chinese medical diagnosis in open populations. Journal of Alternative and Complementary Medicine 2019. PubMed 29493255. Read 2026-10-22.
- Latent tree analysis for the identification and differentiation of evidence-based TCM diagnostic patterns. Phytomedicine 2022. PubMed 35994848. Read 2026-10-22.
- National Center for Complementary and Integrative Health (NCCIH, US). Traditional Chinese Medicine: What You Need To Know. Last updated April 2019. Read 2026-10-22.