Chloasma chirwere chinowanzoonekwa mukurapa kweganda. Chinowanzoonekwa mumadzimai ari pazera rekubereka, uye chinogona kuonekwawo muvarume vasinganyanyi kuzivikanwa. Chinoratidzwa neruvara rwakafanana pamatama, pahuma nematama, kunyanya muchimiro chemapapiro eshavishavi. Yero yakajeka kana shavi rakapfava, shavi rakapfava rakakora kana dema rakapfava.
Vanhu verudzi nevemadzinza akasiyana vanogona kubatwa nechirwere ichi, asi nzvimbo dzine UV yakanyanya, dzakadai seLatin America, Asia, neAfrica, dzine huwandu hwakawanda hwevanhu vanobatwa nechirwere ichi. Vazhinji vevarwere vanobatwa nechirwere ichi vari mumakore avo ekuma30 ne40, uye huwandu hwevanhu vane makore ekuma40 ne50 hunosvika 14% ne16%, zvichiteerana. Vanhu vane ganda jena vanotanga kurwara vachiri vadiki, vanhu vane ganda dema vanokura gare gare, kunyangwe mushure mekuguma kuenda kumwedzi. Ongororo dzakaitwa nevanhu vashoma muLatin America dzinoratidza kuti vanhu vanobatwa nechirwere ichi vari pakati pe4% ne10%, 50% muvakadzi vane pamuviri uye 10% muvarume.
Zvichienderana nenzvimbo yakapararira, melasma inogona kukamurwa kuita mhando nhatu dzekiriniki, kusanganisira pakati pechiso (chinosanganisira huma, pamucheto wemhino, matama, nezvimwewo), zygomatic ne mandible, uye huwandu hwezviitiko zvacho huri 65%, 20%, uye 15%, zvichiteerana. Pamusoro pezvo, zvimwe zvirwere zveganda zvisina kujairika, zvakaita se idiopathic periorbital skin pigmentation, zvinofungidzirwa kuti zvine chekuita ne melasma. Zvichienderana nenzvimbo yakaiswa melanin paganda, melasma inogona kukamurwa kuita epidermal, dermal uye mixed types, pakati padzo iyo epidermal type ndiyo inonyanya kuwanikwa, uye mixed type ndiyo inonyanya kuwanikwa,Rambi rehuniinobatsira pakuziva mhando dzezvirwere. Pakati padzo, rudzi rweganda reganda rune ruvara rwebrown rwakachenuruka pasi pechiedza cheWood; rudzi rweganda rune ruvara rwegrey rwakachenuruka kana bhuruu rakachenuruka pasi peziso, uye musiyano hausi pachena pasi pechiedza cheWood. Kupatsanura melasma nemazvo kunobatsira pakusarudza kurapwa kwakazotevera.
Nguva yekutumira: Chivabvu-06-2022
