The occurrence

development and prognosis of wind-strike have certain common features or share common rules for the changes. Both the basis of the occurrence and the clinical transformation of the pathogenesis are related to yin and yang constitution of the patients

that is

the basic characteristics under yin and yang theory are reflected at all stages of the wind-strike. According to the features of "grouped syndromes for the same disease"

it is proposed that phlegm and stasis syndrome is the basis of the core pathomechanism of wind-strike at all different stages

and phlegm-stasis blocking and obstructing the orifices of mental activity is the root of the disease; due to the different yin and yang constitution of each patient

grouped syndromes in relatively stable condition for the same disease

that is yang group syndromes and yin group syndromes

were presented during the whole pathological changes of wind-strike from occurrence to progression. Therefore

the method of "yin and yang as the principle

and grouped syndromes for differentiation and treatment" is proposed for diagnosing and treating wind-strike in clinical practice

which takes yin and yang as the overall principle

and phlegm-stasis as the root of core pathogenesis

and advocates grouped syndromes differentiation and same treatment for grouped syndromes when providing prescriptions.