Objective: To investigate the association between traditional Chinese medicine( TCM) syndrome element differentiation and infrared thermal imaging features in patients with stomachache. Methods: A total of 130 patients with stomachache who met the inclusion criteria were enrolled,and according to TCM syndrome differentiation,they were divided into cold- evil invading the stomach group,liver qi invading the stomach group,phlegm-fluid retention in the stomach group,damp- heat accumulated in the stomach group,blood stasis obstructing the stoma...