病名。見《千金要方》卷四。亦名月水不調(diào)、月使不調(diào)、月經(jīng)不勻、月候不調(diào)、失信、經(jīng)水無常、經(jīng)水不定、經(jīng)水不調(diào)、經(jīng)不調(diào)、經(jīng)氣不調(diào)、經(jīng)血不定、經(jīng)脈不調(diào)、經(jīng)候不勻、經(jīng)候不調(diào)等。泛指月經(jīng)的周期、血量、血色和經(jīng)質(zhì)的異常。常見的有經(jīng)行先期、經(jīng)行后期、經(jīng)行先后無定期及月經(jīng)過多、月經(jīng)過少等。詳各條。