肾虚失约证(syndrome/pattern of kidney failing to control due to deficiency),中医证候名,属肾虚证类,因先天不足,或久病及肾,肾气不固,膀胱、带脉等失约所致。临床以神疲、乏力,头晕,腰酸膝软,小腹下坠,小便清长,脉虚或弱,尺部尤甚,或伴见小便频数,咳而遗尿,子宫脱垂,白带增多等为特征的证候。[1]