钱乙曰.溺血者盖心主血.与小肠相合.血之流行.周遍经络.循环脏腑.若热聚膀胱.血渗入脬.故小便血出也.
薛己曰.热入大肠.则大便下血.热入小肠.则小便出血.小儿多因胎中变热.或乳母六淫七情.浓味积热.或儿自食甘肥积热.或六淫外侵而成.小便出血者.实热.清心莲子饮.虚热.六味地黄丸.