Part 1 of 6 in the "Stress, sleep and TCM theory" series. The list of the other five is at the foot of this part.
"Someone online said I have liver qi stagnation — is that right?" These two terms — 「肝气」 and 「心神」 — circulate widely and are just as widely misused.
The answer first. In TCM theory, the liver governs the free flow of qi: 「肝」 keeps qi moving freely through the whole body. The heart governs the spirit: 「心」 governs mental, conscious and thinking activities. Both sentences come from the WHO's 2022 standard terminology for TCM.
So in TCM theory 「肝气郁结」 is about whether qi is flowing, and 「心神不宁」 is about whether the mind is settled.
This part does only the definitions, and one thing that matters just as much: what these two terms are not.
The short version
- In TCM theory, 「肝」 and 「心」 name functional systems, not organs of anatomy — that is how the WHO's standard terminology defines both systems.
- So the liver function figures on a blood test cannot measure 「肝气」: that report measures the liver as an organ.
- In the WHO standard, 「肝气郁结」 and 「心神不宁」 are both the names of patterns, describing a state — not another word for a mood.
- Why mood, appetite and the menstrual cycle sit under one word in the theory is part 2; when to see a doctor first is part 5.
A note: this section is general information only. For conditions like these, follow your doctor's diagnosis and treatment, and seek medical attention when you need it.
First, the things that cannot wait
⚠️ A safety note: TCM and Western medicine complement each other; it is not a choice between them. Difficulties with mood and sleep have a layer that needs professional assessment, and a TCM consultation does not substitute for that assessment. Asking for help is not weakness — there is professional support for this.
Thoughts of harming yourself — this is not something to wait on. Call 999 now, or go to the nearest hospital emergency department. To talk to someone, the Ministry of Health's Talian HEAL 15555 is open every day from 8 am to 12 midnight, public holidays included; Befrienders KL is open 24 hours on 03-7627 2929. You can also contact your doctor.
All seven items, and why each one means seeing a doctor first, are in part 5.
A note: this section is general information only. For conditions like these, follow your doctor's diagnosis and treatment, and seek medical attention when you need it.
I. First: the TCM "liver" is not your liver
As with 「肾」, this is easily confused.
In TCM theory, 「肝」 is the name of a functional system. The WHO's standard terminology for TCM defines the liver system as a functional system composed of the liver, gallbladder, tendons, nails and liver meridian.
The same standard likewise defines the heart system as a functional system, composed of the heart, small intestine, blood vessels, face, tongue and heart meridian.
In other words, 「肝」 and 「心」 in TCM theory name a set of functions, not the single organ of anatomy.
- The liver function figures on a blood test measure the liver as an organ. They are not the TCM 「肝气」, and the two do not map onto each other.
- The 「心」 in 「心神」 is likewise not the heart as an organ. Heart tests are a doctor's work; 「心神」 is assessed by a TCM practitioner.
💡 Remember: when you see 「肝」, 「心」 or 「肾」, ask first: is this the TCM functional system, or the organ?
II. What 「肝气」 and 「心神」 actually are
Everything below is TCM theory, defined from the WHO's 2022 standard terminology and the Hong Kong Department of Health's public material.
① The liver governs the free flow of qi (肝主疏泄). The WHO standard's description is: the liver maintains free flow of qi over the entire body. The same standard describes qi as the intangible, high-mobility nutritive substance that maintains vital activities.
The same standard records 「肝喜条达而恶抑郁」 — the liver likes to flow freely and dislikes suppression: liver qi needs to be soft and unobstructed, and free flow of qi guarantees its normal functions; and that the emotion of the liver is anger.
So 「肝气郁结」 in TCM theory is the name of a pattern (the WHO standard calls it the liver qi stagnation pattern), describing a state in which the liver fails to maintain the free flow of qi.
It is a judgement a practitioner reaches after assessment, not another word for a mood.
② The heart governs the spirit (心主神明). The WHO standard's description is: the heart dominates the vital activities and governs mental, conscious and thinking activities. Hong Kong's Chinese Medicine Regulatory Office says the same: the heart governs the blood vessels and stores the spirit.
So 「心神不宁」 is about the mental side not settling.
The WHO standard lists the disquieted heart spirit pattern and notes that it often results from emotional disturbance or medical conditions. That second half is why part 5 exists.
With the definitions in place, one more thing needs saying: these words belong after a consultation. The same set of presentations can point to different patterns in TCM theory.
Which pattern applies is the practitioner's judgement after seeing the whole picture — not a label for a reader to match against themselves. How that order runs is part 6.
💡 Remember: liver qi is about "flowing or not"; heart shen is about "settled or not" — two words, two directions.
The words used in this part
All four are the WHO standard's own vocabulary, and you will meet them directly in TCM material or in what a practitioner says.
- Functional system — the term the standard uses to define the liver system and the heart system: the name of a set of functions, not one organ.
- Qi (气) — the standard's description is: the intangible, high-mobility nutritive substance that maintains vital activities. Every use of "qi" in this series means that sentence.
- Free flow (疏泄) — the two characters inside 「肝主疏泄」, which the standard explains as the liver maintaining free flow of qi over the entire body. What it governs is part 2.
- Pattern (证) — the name of a judgement a practitioner reaches after seeing the whole picture. The liver qi stagnation pattern and the disquieted heart spirit pattern are both pattern names in the standard, not labels a reader can apply to themselves.
Frequently asked
What does 「肝气郁结」 actually mean? In TCM theory the liver governs the free flow of qi, maintaining free flow of qi over the entire body — that is the WHO standard's description. 「肝气郁结」 is the name of a pattern, describing a state in which the liver fails to maintain that free flow. It is a practitioner's term after assessment, not a synonym for "in a bad mood". Why mood, appetite and the cycle sit under one word in the theory is in part 2.
If I have liver qi stagnation, will my liver function test be abnormal? They are not the same thing. Liver function figures measure the liver as an organ; the TCM 「肝」, as the WHO standard defines it, is a functional system. Whether your liver function is fine is for the doctor reading the report; whether 「肝气」 is flowing is for the TCM practitioner's assessment.
Is 「心神不宁」 the same as an anxiety disorder? They are two different languages. 「心神不宁」 (the 「心神不宁证」 pattern in TCM theory) is the name of a pattern, about the mind not settling; the WHO standard notes that it often results from emotional disturbance or medical conditions. An anxiety disorder is a psychiatric diagnosis, assessed by a doctor. If anything listed in part 5 applies, see a doctor first.
Better not to: take a short video's or a forwarded graphic's terminology as your own diagnosis. These two words sit after a consultation, not before it.
A note: this section is general information only. For conditions like these, follow your doctor's diagnosis and treatment, and seek medical attention when you need it.
The other five parts in this series
- Part 2: What "liver qi" models — one concept, three threads
- Part 3: The two languages side by side, and one crunch-season week
- Part 4: What TCM theory arranges day to day — six habits in one table
- Part 5: See a doctor first in these situations — seven signs, and the reason for each
- Part 6: What actually happens at the consultation — routine first, then the pattern, then the direction
👉 If you are not sure where to begin with your own stress and poor sleep, you are welcome to book an online consultation with HansMed, where a practitioner registered under the T&CM Act 2016 can assess it with you; if anything in part 5 applies, see a doctor first.
Sit with a licensed TCM practitioner from wherever you are.
HansMed Modern TCM
For general wellness education only — not medical advice. Consult a registered TCM practitioner for personal guidance.
Sources
- World Health Organization, WHO international standard terminologies on traditional Chinese medicine, 2022 (entries 70 · 73 · 133 · 136 · 141 · 142 · 224 · 1161 · 1240) — https://www.who.int/publications/i/item/9789240042322
- Chinese Medicine Regulatory Office, Department of Health, Hong Kong, "Health Preservation in Chinese Medicine — Maintain a Healthy Mental State" — https://www.cmro.gov.hk/html/gb/useful_information/public_health/feature_articles/Health_Preservation_in_Chinese_Medicine-Maintain_a_Healthy_Mental_State.html
- Ministry of Health Malaysia, Hospital Pendang (Kedah State Health Department), Info Kesihatan 2024 (the Talian HEAL 15555 number and its hours) — https://jknkedah.moh.gov.my/hpendang/index.php?option=com_sppagebuilder&view=page&id=139
- Befrienders Kuala Lumpur (the 24-hour line) — https://www.befrienders.org.my/



