月經(jīng)病是指月經(jīng)周期、經(jīng)期、經(jīng)量、經(jīng)色、經(jīng)質(zhì)的異常,或伴隨月經(jīng)周期,如在經(jīng)前、經(jīng)期、經(jīng)后周期性出現(xiàn)的癥狀為特征的一類疾病。