Deficiency of kidney-qi and debility of marrow was the basic pathogenesis and stagnation of phlegm in brain collateral was the important factor.

• 其中,肾精气亏虚、髓海不足是老年性痴呆发病的根本病机,而痰瘀互结、阻滞脑络则是老年性痴呆发病的重要因素。