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 se<em>hemoglobin esegazini lolusu kuthiwa yi<em>Oxyhemoglobin: I<em>Oxyhemoglobin, 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, i<em>oxidative 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
