Introduction to TCM

Basics of TCM

  • Yin-Yang | Five Elements

Zang-Fu Theories

  • Zang Organs | Fu Organs

Classification of Antineoplastic Herbal Medicines

Characteristics of Herbal Medicines


  • By Auscultation & Olfaction
  • By Inspection


Theories of Channels (Meridians) and Collaterals

Reference: A Modern View of the Immune System

Differentiation of Syndromes

  • 8 Principles
  • 6 Channels 4 Stages
  • Syndromes of Zang-Fu Organs


  • Exogenous | Pestilential
  • Pathogenic Factors
  • Emotional

Materia Medica

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Pathogenic wind prevails in spring and is a common pathogenic factor of the common cold. It causes diseases together with other pathogenic factors, e.g., wind-cold, wind-heat, wind-damp, etc.

Wind is a yang pathogenic factor, characterized by upward flowing

When it attacks the human body, it often affects the upper region first. For example, if exogenous pathogenic wind causes a common cold, its symptoms are headache, nasal obstruction, itching or sore throat, etc., which are confined to the upper body. If pathogenic wind together with dampness induces disease the symptoms are swelling of the eyes and face.

Wind is characterized by outward dispersion

If pathogenic wind attacks the body, it may affect the defensive qi causing derangement in the opening and closing of pores. The clinical symptoms are fever, sweating, aversion to wind, etc.

Wind blows in gusts and is characterized by rapid change

In the Suwen it says, "The wind is good at traveling and undergoes change frequently." Diseases caused by wind are marked by migrating disease location and symptoms that appear and disappear. Onset is abrupt and disappearance hasty, e.g., migrating joint pain of bi syndromes, which usually involve joint pains, and intolerable itching of urticaria.

Wind is characterized by constant moving

Pathogenic wind causes motor impairment or abnormal motion of the trunk or limbs manifested by convulsion, opisthotonos, spasm and tremor of the four limbs, and rigidity of the neck. In the Suwen it says, "Predominant wind causes symptoms characterized by movements."

Wind is liable to associate itself with other pathogenic factors

Pathogenic wind is apt to be accompanied with cold, damp, or heat to become wind-cold, wind-damp, or wind-heat pathogenic factors.

Wind may be also associated with some pathological products such as phlegm, forming pathogenic wind-phlegm. The commonly seen symptoms caused by exogenous pathogenic wind are known as shangfeng (wind damage).

Main clinical manifestations: fever, aversion to wind, perspiration, slow and superficial pulse, dry and itching throat, cough, nasal obstruction and discharge.

These symptoms are due to damage by exogenous pathogenic wind to the body surface and the lung. If exogenous pathogenic wind attacks the skin and muscles, the wei (defensive) qi is damaged and fails to defend the body surface. So perspiration and aversion to wind occur. When wei qi fights against exogenous pathogenic wind, fever arises. When the disease locates in the exterior of the body, it causes sweating, thus the pulse is superficial and slow. When exogenous pathogenic wind attacks the lung, its function will become abnormal in the spreading and descending of qi and also brings about a dysfunction of body fluid distribution. The clinical manifestations of dry and itching throat, cough, nasal obstruction and discharge occur.

More about the other Exogenous Factors: Cold, Summer-heat, Damp, Dryness, Fire Heat and Mild Heat.

Traditional Chinese Medicine pages by Raymond Cheng, PhD DPA FRSA FRSPH

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With over 3000 years of experience, Traditional Chinese Medicine (TCM) has remain one of the many fascinating areas in ancient Chinese culture. First known to be documented in the Yellow Emperor's Canon of Medicine, TCM is believed to have been practised in as early as 475 to 221 B.C. The field of working knowledge of TCM stretches from anything related to general healthcare practice to the philosophy of the mind, the logic of life, religion, and even to as far as cosmology and astronumerology. This is why in order to thoroughly understand the concepts behind TCM, one must be comprehensive in learning and embracing the Chinese culture as a whole.

Just as Douglas Hoff put it when he explained about accupuncture, "The systems of TCM uses the concepts of elements and meridians and are completely immersed in the Asian cosmology which takes shape through the religions." The meridian-brain mechanism, the fundamental working concept of acupuncture, in which the pain block from the message that the needle or burning cone of herbs gives to the point of stimulus, was only found centuries later by the West through science and technology.


Raymond Cheng, PhD DPA Thank you for visiting this TCM and acupuncture information website. If you have previously been to this website, you might have noticed that some of the pages on ancient historical ideas and holistic thinkings related to Chinese metaphysics are temporarily taken offline. This is because I will be revamping the whole website and be moving those information into a new \"Ancient Chinese Culture\" section so as to reflect a more current perspective on the interpretation of some of the fundamental concepts as well as to include some of the latest information in the area. But if you have just found this website for the very first time, I welcome you again and wish you could find what you require and, hopefully, you could also be benefitted from reading the articles I published on this website.

Please be patient and do come and check out this website frequently as it's being revamped.

Raymond Cheng, PhD DPA FRSA FRSPH

March 28, 2020.


This website is published, edited and designed by Raymond Cheng, and reflects only and only his personal views and opinions in his individual capacity. The information available at this website is not intended directly or by implication to either diagnose or treat any medical, emotional, or psychological condition or disorder. It is also not intended to create a physician-patient relationship between you and I or between you and Wyith Institute™ and The Office of Dr Raymond K K Cheng. The information here is not a substitute for advice and treatment provided by your physician or by another healthcare professional. It is always recommended that consultation with local healthcare providers be obtained for any of your specific health or medical concerns. Furthermore, any products that can be purchased (yet you can see I don't have much to sell here) through advertisers' banners or through links to other websites are not either explicitly or implicitly given any warranty or endorsement by me, my colleagues, Wyith Institute™ or any of its associated businesses.