Nws tshwm sim los ntawm kev cuam tshuam ntawm cov kev sib txuam zoo ntawm cov nqaij mos, lysis cell thiab tuag, thiab ntau dua melanin los ua cov pigmentation. Daim tawv nqaij ntawm lub ntsej muag yog daim tawv nyias, cov hlab ntsha yog qhov muaj ntau tshaj plaws, thiab cov pigmentation feem ntau yuav tsim. Cov pigmentation yog qhov tseem ceeb Nyob rau hauv txheej basal ntawm epidermis, melanin hais ua kom ntau. Thaum mob hnyav, muaj ntau dua melanin hauv lub melanocytes ntawm lub dermis. Piv nrog rau cov qub, cov lej ntawm cov ເມັດ xim, kev tsim ntawm melanin thiab kev ua ntawm melanin hais txhua yam nce ntxiv.
(1) Yin-yang tsis txaus ntseeg nyob rau hauv tib neeg lub cev, ua ntej los ntawm stagnation ntawm daim siab qi, uas ua rau muaj ntshav stasis ntsej muag; qhov thib ob, qaug zog spleen thiab lub plab, qi thiab ntshav tsis tuaj yeem ua kom lub ntsej muag moisturize, damp tshav kub nce mus rau kev tsim cov pob ntawm lub ntsej muag; thirdly vim tsis txaus cov raum yaj, yaj tawg, ntshav ntaug ntawm lub ntsej muag chloasma.
(2) Tom qab cev xeeb tub, cov placenta zais zais ntau dua androgen thiab progesterone, yog li ntawd muab cov tsos mob chloasma sib xws muaj rau ntawm sab plhu ntawm cov poj niam thaum cev xeeb tub. Txawm li cas los xij, tom qab kev zais tawm ntawm androgens thiab progesterone hauv lub cev rov qab mus rau qhov qub tom qab xa khoom, neeg feem coob' s s yuav rov qab qis lossis ploj dua.
(3) Yam tshuaj muaj yees. 9% mus rau 20% ntawm cov poj niam uas noj tshuaj ncauj ntev ntev ntev yuav muaj chloasma. Qee tus neeg muaj lub ntsej muag txawm tias ib lub hlis tom qab siv tshuaj tiv thaiv. Ntxiv rau, lawv noj tshuaj rau ntshav siab, ntshav qab zib thiab mob polyphagia. Cov zaub mov muaj zog, xws li cov zaub kav, coriander, zaub ntug hauv paus, thiab lwm yam kuj yog yooj yim ua rau muaj ntshav qab zib.
(4) qee cov kab mob xws li mob siab thiab mob ntsws yuav ua rau muaj kev ua haujlwm ntawm tyrosinase thiab ua kom cov melanin ntau lawm, tab sis lub cev' s muaj peev xwm tshem tawm melanin yuav tsis muaj zog. Thaum melanin tsis tuaj yeem tawm ntawm lub cev hauv lub sijhawm, nws tseem yuav tsim tawm ntawm lub ntsej muag thaum lub sijhawm Melasma; Tsis tas li ntawd, kev siv tshuaj pleev ib ce tsis raug tuaj yeem ua rau hnyav dua thiab nrawm