1) Ibanga ryuruhu
Guhindura ibara ryuruhu biterwa ahanini nibintu bitatu bikurikira.
1. Ibirimo nogukwirakwiza pigment zitandukanye muruhu bigira ingaruka kuri eumelanine: iyi niyo pigment nyamukuru igena uburebure bwamabara yuruhu, kandi kwibanda kwayo bigira ingaruka kumucyo wuruhu. Mu birabura, granules ya melanin nini kandi ikwirakwizwa cyane; Muri Aziya na Caucase, ni nto kandi iratatanye. Pheomelanin: iha uruhu umuhondo wijimye. Ibirimo hamwe nogukwirakwiza bigena amajwi ashyushye kandi akonje yibara ryuruhu, kurugero, Abanyaziya mubisanzwe bafite ibintu byinshi bya melanin yijimye. Carotenoide na flavonoide: Izi ni pigment zidasanzwe zikomoka ku ndyo, nka karoti, ibinyamisogwe, n'ibindi biribwa bikungahaye kuri beta karotene, bishobora kongera umuhondo kuri orange hue ku ruhu.
2. Ibiri muri hemoglobine mu maraso yuruhu byitwa Oxyhemoglobin: Oxyhemoglobin, ibara ritukura kandi ryuzuye uruhu, rishobora gutuma uruhu rusa neza kandi rukagira ubuzima bwiza. Deoxyhemoglobin: Hemoglobine idafite ogisijeni igaragara nk'umutuku wijimye cyangwa umutuku, kandi iyo igipimo cyayo kiri mu maraso ari kinini, uruhu rushobora kugaragara neza.
3. Usibye ibindi bintu, ibara ryuruhu riterwa no gutembera kwamaraso, guhagarika umutima, urugero rwa hormone, hamwe nibidukikije nko guhura na UV. Kurugero, imirasire ya ultraviolet itera melanocytes kubyara melanine nyinshi kugirango irinde uruhu kwangirika.
2) Ibanga rya pigmentation
Ikirangantego, ubuvuzi kizwi nka pigmentation lesion, ni ibintu byijimye byijimye ryuruhu. Bashobora kugira imiterere itandukanye, ingano, n'amabara, kandi bafite inkomoko zitandukanye.
Ikirangantego gishobora kugabanywa muburyo bukurikira:
Ibinyomoro: mubisanzwe bito, bisobanuwe neza, ibara ryijimye ryijimye ryibara ryigaragara cyane mumaso no mubindi bice byuruhu bikunze guhura nizuba.
Ahantu h'izuba cyangwa Imyaka: Utu tuntu ni nini, dufite ibara kuva ibara ry'umukara kugeza umukara, kandi usanga akenshi mu maso, mu biganza, no mu tundi turere tw’abantu bageze mu za bukuru ndetse n'abageze mu za bukuru bahuye n’izuba igihe kirekire.
Melasma, izwi kandi ku izina rya “ahantu ho gutwita,” ubusanzwe igaragaza nk'ibara ryijimye ryijimye mu maso rifitanye isano n'imihindagurikire y'urwego rwa hormone.
Post inflammatory hyperpigmentation (PIH): Iyi ni pigmentation yakozwe bitewe no kwiyongera kwa pigment nyuma yo gutwikwa, bikunze kugaragara nyuma yo kwangirika kwa acne cyangwa uruhu.
Ibintu bikomoka ku ngirabuzima fatizo bigira uruhare mu gushiraho pigmentation: Ubwoko bumwebumwe bwa pigmentation, nka frake, bufite imiterere yumuryango isobanutse. Ultraviolet guhura: Imirasire ya Ultraviolet niyo mpamvu nyamukuru itera pigmentation zitandukanye, cyane cyane izuba hamwe na melasma. Urwego rwa hormone: Inda, imiti yo kuboneza urubyaro, cyangwa indwara ya endocrine irashobora gutera impinduka mumisemburo ya hormone, bigatuma habaho melasma. Gutwika: Ikintu cyose gitera uruhu, nka acne, ihahamuka, cyangwa reaction ya allergique, birashobora gutera pigmentation post inflammatory. Ingaruka mbi zibiyobyabwenge: Imiti imwe n'imwe, nk'imiti igabanya ubukana bwa miti ndetse n'imiti ya chimiotherapie, irashobora gutera pigment. Ibara ryuruhu: Abantu bafite uruhu rwijimye bakunze kwibasirwa cyane.
Igihe cyo kohereza: Ukuboza-12-2024
