There is a longitudinal relationship in the body that relates meridians of the same polarity, connecting Yang channels of the arm with Yang channels of the leg and Yin channels of the arm with Yin channels of the leg. This is what we know as unitary channels (or homonymous relationship, since these meridians share a Chinese name). Also read: principal meridians.

The unitary Yang channels connect the entrails and the Yin the organs:

• Tai Yang: Small Intestine and Bladder
• Shao Yang:Triple Burner and Gall Bladder
• Yang Ming: Large Intestine and Stomach
• Tai Yin: Lung and Spleen
• Jue Yin: Heart Master and Liver
• Shao Yin:Heart and Kidney

Celestial energies

Each of these unitary channels serves as a vehicle for a Celestial Energy:

• Tai Yang: Cold
• Shao Yang: Fire
• Yang Ming: Dryness
• Tai Yin: Dampness
• Jue Yin: Wind
• Shao Yin: Heat

Patterns

Each unitary channel manifests symptoms when it is blocked or affected by an external pathogenic energy. Here is a summary, click to read more detailed and possible treatments.

• Tai Yang Pattern: aversion to cold, headache accompanied by neck rigidity. Floating pulse.

• Shao Yang Pattern: bitter taste in the mouth, dry throat, vertigo, alteration of cold-heat, fullness of thorax, and in hypochondrium. Distress and desire to vomit. Lack of appetite. Wiry pulse.

• Yang Ming Pattern: heat in the body, aversion to heat. Sweating, heat in the chest and thirst. Large, full, and strong pulse. May present abdominal pain, which does not tolerate pressure, constipation, afternoon fever. It is caused by the accumulation of heat in the stomach and intestines.

• Tai Yin Pattern: no fever, abdominal distension, vomiting, diarrhea, lack of appetite, moderate and weak pulse.

• Shao Yin Pattern: depressed mood, anxiety, lethargy, languid and fine pulse. It is caused by blood and energy deficiency, due to deterioration of the Kidney-Heart.

• Jue Yin Pattern: it is a complicated and at the same time serious pattern. Alterations of cold-heat are present. Unconsciousness, thirst, dry throat, ascending Qi attacking the heart, chest pain accompanied by burning. Feeling of hunger but without appetite.

• Three Yang Pattern: initial period with headache, aversion to cold, fever, and floating pulse, correspond to the Tai Yang layer. When pathogenic factors penetrate internally, symptoms of heat in the body appear, aversion to heat; one is in the Yang Ming phase. Symptoms of fever without aversion to cold, or aversion to cold without fever or alteration of fever and chills, accompanied by bitter taste in the mouth and dry throat; Shao Yang pattern.

• Three Yin Pattern: another pathological change is the transformation of heat symptoms into cold, with symptoms of abdominal fullness, vomiting, diarrhea; Tai Yin pattern. The continuity of laxity symptoms, languid and fine pulse, with aversion to cold and cold limbs are characteristic of the Shao Yin pattern. If complications continue, alterations to cold-heat appear; Jue Yin pattern.

Also the reactions of the meridians to attacks of external energies and the different combinations between the affectations of channels and organs are presented. The different combinations of the different patterns are presented. The intercommunications between the six energy levels are what make possible the different manifestations of the organism before the attack of external pathogenic factors.