1) Imfihlo yolusu
Ukutshintsha kwebala lolusu ikakhulu kuphenjelelwa zezi zinto zintathu zilandelayo.
1. Umxholo kunye nokusabalalisa kwemibala eyahlukeneyo kwesikhumba kuchaphazela i-eumelanin: le yi-pigment ephambili emisela ubunzulu bombala wesikhumba, kwaye ukugxininiswa kwayo kuchaphazela ngokuthe ngqo ukukhanya kwethoni yesikhumba. Phakathi kwabantu abamnyama, i-melanin granules inkulu kwaye isasazwa kakhulu; Phakathi kwama-Asiya kunye namaCaucasus, incinci kwaye isasazeke ngakumbi. I-Pheomelanin: inika ulusu umbala omthubi ukuya kobomvu. Umxholo kunye nokusabalalisa kwayo kumisela ithoni efudumeleyo nepholileyo yombala wesikhumba, umzekelo, ama-Asiya ahlala enomxholo ophezulu we-melanin emdaka. I-Carotenoids kunye ne-flavonoids: Ezi zizibala zangaphandle eziphuma ekutyeni, njengeminqathe, amathanga, kunye nokunye ukutya okutyebileyo kwi-beta carotene, enokongeza umbala omthubi ukuya kwi-orenji eluswini.
2. Isiqulatho sehemoglobin esegazini lolusu kuthiwa yiOxyhemoglobin: IOxyhemoglobin, engumbala obomvu oqaqambileyo noninzi eluswini, inokwenza ulusu lubonakale ludlamkile kwaye lusempilweni. I-Deoxyhemoglobin: I-hemoglobin engekho oksijini ibonakala ibomvu ebomvu okanye imfusa, kwaye xa umlinganiselo wayo egazini uphezulu, ulusu lunokubonakala lumhlophe.
3. Ukongezelela kwezinye izinto, umbala wolusu ukwaphenjelelwa kumjikelezo wegazi, ioxidative stress, amanqanaba eencindi zamadlala, nezinto ezisingqongileyo ezifana nokuba sesichengeni seUV. Ngokomzekelo, imitha ye-ultraviolet ivuselela i-melanocytes ukuba ivelise i-melanin eninzi ukukhusela ulusu emonakalweni.
2) Imfihlelo ye-pigmentation
Amabala, aziwa ngokwezonyango njengezilonda ze-pigmentation, yinto eyenzeka kwindawo emnyama yombala wolusu. Zinokuba neemilo ezahlukeneyo, ubukhulu, kunye nemibala, kwaye zinemvelaphi eyahlukileyo.
Amabala anokwahlulwa ngokwezi ntlobo zilandelayo:
Amabala: amabala amdaka ngesiqhelo, amancinci, achazwe kakuhle, anombala okhanyayo avela ebusweni nakwezinye iindawo zolusu ezihlala zichanabeka elangeni.
Amabala elanga okanye amabala obudala: La mabala makhulu, anombala ukusuka kumdaka ukuya kumnyama, kwaye aqhele ukufunyanwa ebusweni, ezandleni, nakwezinye iindawo zabantu abakubudala obuphakathi kunye nabasele bekhulile abaye bachanabeka ekukhanyeni kwelanga ixesha elide.
I-Melasma, ekwabizwa ngokuba "ngamabala okukhulelwa," ibonakala njengamabala amdaka amnyama ebusweni anxulunyaniswa notshintsho kumanqanaba ehomoni.
I-post inflammatory hyperpigmentation (PIH): Le yi-pigmentation eyenziwe ngenxa yokunyuka kwe-pigment deposition emva kokudumba, okubonwa ngokuqhelekileyo emva kokuba i-acne okanye umonakalo wolusu upholile.
Imiba yemfuza inegalelo ekwakhekeni kombala webala: Iindidi ezithile zombala, ezifana namabala, zinesiseko esicacileyo semfuza yentsapho. Ukukhanya kwe-Ultraviolet: Imitha ye-Ultraviolet ngoyena nobangela wemibala eyahlukeneyo yebala, ngakumbi i-sunspots kunye ne-melasma. Amanqanaba eHormone: Ukukhulelwa, iziyobisi zokuthintela, okanye ukuphazamiseka kwe-endocrine kunokubangela utshintsho kumanqanaba ehomoni, okukhokelela ekuphuhliseni i-melasma. Ukudumba: Nayiphi na into ebangela ukudumba kolusu, okunje ngamaqhakuva, ukwenzakala, okanye ukuchasana nomzimba, kunokubangela ukudumba kwebala. Iziphumo ezingalindelekanga zeziyobisi: Amanye amayeza, njengamachiza athile okulwa nesifo seengcongconi kunye nechemotherapy, anokubangela ukuba ibala libekho. Umbala wolusu: Abantu abanolusu olumnyama bathanda ukuba nebala eligqithisileyo.
Ixesha lokuposa: Dec-12-2024
