左腹积证(amassment disease of left abdomen)是指以左腹部疼痛,有积块,大便次数增多,便中常伴有黏冻或血液,倦怠乏力,面色萎黄,形体渐羸,舌紫暗或有瘀点、瘀斑,脉弦为常见症的积证。