Dogon lokaci melanonychia shine gaban nau'in sutura mai launi, yawanci launin ruwan kasa ko baƙar fata, tare da tsawon kwanciya nail. Su na kowa ne a cikin mutane masu launin fata. Matsanancin sakamako na melanonychia daga shigar da melanin a cikin ƙusa da ƙusa daga wasu dalilai masu yawa. Ƙananan mutanen da ke da melanonychia mai tsawo suna da melanoma .
Dalilin
Sanya a cikin kusoshi an samar da kwayoyin da ake kira melanocytes a cikin kwanciya. Suna samar da melanin, alamar da ke ba gashi launi kuma yana samar da rana a cikin fata. A cikin kwanciya, suna canja wurin melanin a cikin kwayoyin da suke samar da ƙusa. Lokacin da ka ga kullun duhu a cikin ƙusa, akwai inda suke samar da ƙarin melanin a tushe kuma yana haifar da sutura kamar yadda ƙusa ke fitowa waje.
Sakamakon malanonychia an raba su cikin nau'o'i na kunnawa melanocytic, inda kwayoyin da suka rigaya sun fara samar da ƙarin melanin, da hyperplasia na melanocytic inda yawancin kwayoyin halittu suke karuwa.
Binciken Bidiyon
Yawancin lokaci zaku ga duhu a cikin wani ƙusa. A cikin kashi 73 cikin 100 na adadin ƙwararru, wannan ya faru ne saboda kwayoyin da suka rigaya sun samar da karin pigment. Nauyin launin launin launin fata yana da mahimmanci ga wannan, kamar yadda mutanen da ke da duhu fata suna da ƙwayar duhu a cikin kusoshi.
Kuna samun karin kamar yadda kuka tsufa, kuma suna samun fadada. Suna faruwa sau da yawa a kan yatsun da kake amfani da su don kama abubuwa-yatsanka, index, da yatsan tsakiya.
Tuna ciki shine wani lokacin lokacin da za ku iya ganin malanonychia mai tsawo. Cutar zuwa ƙusar ƙusa zai iya haifar da shi. Idan ka ga ratsi a kan ƙananan yatsunka ko babban yatsunka, mai yiwuwa ne saboda yatsunka suna kan takalma idan basu dace ba.
Cutar kamuwa da ƙwaƙwalwar zai iya haifar da duhu, kamar yadda psoriasis, kamuwa da launin fatar jiki a kusa da ƙusa, amyloidosis, da lichen planus.It na iya bayyana, sau da yawa tare da makamai masu yawa, a Addison da cutar AIDS.
Chemotherapy, Hanyoyin radiyo da faɗakarwar lantarki na iya haifar da kunnawa melanocytic, sau da yawa a kan wasu kusoshi. Zai iya bayyana a ciwo na Laugier-Hunziker, ciwo na Peutz-Jeghers, da kuma ciwo na Touraine.
Melanocytic Hyperplasia-Benign da M Melanoma
Melanocytes zasu iya ninka kuma suna samar da launi a cikin mummunan hali ko mummunar yanayin. Siffar hyperplasia na iya zama a cikin lentigines (spots) ko nevi (nests). A cikin yara, 77.5% na lokuta na melanonychia ne saboda mummunan hyperplasia na melanocytic.
M hyperplasia melanocytic zai iya zama saboda mummunan melanoma ko a wuri. An fi gani sau da yawa a cikin yatsa, babban yatsa ko yatsan hannu. Yana faruwa ne kamar sau da yawa a cikin dukkan fannonin launin fata, yayin da melanoma a wasu shafukan yanar gizo ya fi raguwa don rassan launin fata.
Gwaje gwaje-gwaje
Don yin mulkin fitar da melanoma, ana amfani da biopsy sau da yawa. Labaran kwayar yana dauke da nama daga nau'in ƙusa, wanda zai iya haifar da yaduwa. Wannan bazai zama abin da kake so ba, amma melanoma yana da yanayin lafiya wanda zai buƙaci magani.
Source:
Julie Jefferson * da Phoebe Rich. "Melanonychia." Aikin Farko na Dermatol. 2012; 2012: 952186. An wallafa shi a labaran 2012 Junairu 27: 10.1155 / 2012/952186. PMCID: PMC3390039