A.經(jīng)行前2~3天或正值經(jīng)行發(fā)生泄瀉 B.經(jīng)凈漸止 C.偶然發(fā)作一次 D.并伴隨月經(jīng)周期反復(fù)發(fā)作 E.與月經(jīng)周期無關(guān)