There is high incidence of UAP in aged patients, always result in enfeeblement of viscera, imbalance of Yin and Yang and misadjustment of Qi and blood.

本多发于中老年人，腑亏损，阴阳失调，气血失和所致，气虚常为气滞血瘀的重要环节。扶正和祛邪是治疗本的两大法规。