Origin of the framework
MLMN grew from Koichi Ishihara’s attempt to reconcile the distance between standardized teaching and the complexity of the patient before him. His path from pulse diagnosis and the Nanjing to Japanese Kampo and Utsugi Kontai’s Igaku Keigo is described in the founder’s statement.
Students often meet several systems of pattern differentiation and ask: Which one should I use? Do they contradict each other? The problem may lie in the assumption that only one framework is allowed to describe a patient at a time.
The Strength and Limit of a Single-System Approach
Within one tradition, a practitioner observes a cluster of findings, determines a clinical configuration, establishes a treatment principle, and selects an intervention. This has real strengths: reasoning can be checked within a coherent vocabulary; classical references can be found quickly; and the method can be taught.
Yet complicated patients rarely remain inside one map. A case of fatigue, thirst, low fever, night sweating, a thin rapid pulse, and scant tongue coating can be read through fluid and yin depletion, relationships among the Kidney, Lung, and Heart, disease momentum in the Six Confirmations, lower-burner distribution, constitution, onset, season, time of aggravation, and recurrence. These are not necessarily rival diagnoses. They may be complementary observations at different levels.
What Skilled Clinicians Often Do Implicitly
An experienced practitioner may move between several maps while asking which layer currently has the greatest influence on the decision. MLMN—Multi-Layered Meta-Network Theory—is a working framework developed by Koichi Ishihara to document that process.
| Layer | Domain | What it adds |
|---|---|---|
| L1 | Constitution | Age, inherited tendencies, developmental and constitutional baseline |
| L2 | Etiology | External exposure, internal injury, diet, exhaustion, emotion, precipitating event |
| L3 | Zang-fu | Functional systems and their relationships |
| L4 | Qi, Blood, Fluids | Generation, movement, depletion, stagnation, and maldistribution |
| L5 | Channels | Pathways, networks, body-surface distribution, and extraordinary vessels |
| L6 | Six Confirmations | Disease depth, momentum, transition, and therapeutic direction |
| L7 | Sanjiao | Upper, middle, and lower spatial distribution; pathways of qi and fluids |
| L8 | Ministerial Fire | The location and behavior of the body’s driving fire |
| L9 | Environment | Season, climate, geography, work, and lived surroundings |
| L10 | Time | Onset, duration, rhythm, recurrence, progression, and response |
Not Ten Diagnoses
The layers are not a checklist for producing ten labels. They are prompts for identifying missing information and relationships. A practitioner may find only three layers decisive in a given case. The value lies in recording why those layers mattered and why others did not.
Before Treatment Selection
MLMN is most useful before a formula or treatment plan is selected. If the Six Confirmations alone do not resolve a complex presentation, the clinician can examine precipitating cause, zang-fu relationships, fluid distribution, sanjiao location, and temporal recurrence. The question becomes: why this presentation, in this person, under these conditions, now?
Abdominal and pulse findings are not themselves the “time layer.” They are evidence used to examine several layers. When those findings change across visits, time becomes part of their interpretation. Keeping observation, framework, and longitudinal change separate makes clinical records easier to review.
What MLMN Does Not Claim
- It does not invalidate established pattern differentiation.
- It does not turn classical categories into modern biomedical facts.
- It does not automatically diagnose or prescribe.
- It is a research and documentation framework under continuing development and critical review.