It may also be infected by different reasons, such as six climatic exopathogens, seven human emotions, drinking, smoking, diet, wound, virus, germ, parasite and so on.

• 又因感受（染）病因（六淫病邪、七情、饮酒、吸烟、饮食、外伤、病毒、细菌、寄生虫等）的不同，而致产生的病常不同；