1.Onset of Diseases
Acute onset belongs to yang and chronic onset be-longs to yin.
2.Depth of Diseases
The diseases that occur in the superficial skin and muscle belong to yang and the diseases that occur in thetendon and bone belong to yin.
3.Change of Skin Color
Red skin color in the pathological position belongs to yang and purple dark, pale color or no change in skin color belongs toyin and yang
4.Change of Skin Temperature
The burning sensation in the sick area belongs toyang and cool, cold or slight heat sensation belongs toyin.
5.Height of Tumefaction
The high tumefaction belongs to yang and the flat ordepressed tumefaction belongs to yin.
6.Scope of Tumefaction
Localized tumefaction with shrunken base belongs toYang and the diffuse tumefaction with scattering base belongs to yin.
7.Hardness of Tumefaction
The tumefaction in medium hardness and disappearing after ulceration belongs to yang and the tumefactionas soft as cotton and as hard as a rock belongs to yin.
8.Severity of Pain
Serious pain belongs to yang, and no pain, insidious pain, aching pain or spasmodic pain belongs to yin.
9.Change of Pus
Thick pus in yellow color after ulceration belongs to yang and thin pus in dark color or mixed with blood beongs to yin.
10.Duration of Illness
The short duration mostly belongs to yang syndromeand the long duration mostly belongs to yin one.
11.General Condition
At the onset of yang syndromes, there are the symptoms of fever, aversion to cold, dry mouth, thirst, scanty urine, constipation, red tongue, yellowish coating, and rapid Pulse.
