Urticaria pigmentosahttps://en.wikipedia.org/wiki/Urticaria_pigmentosa
Urticaria pigmentosa shine mafi yawan nau'in mastocytosis na fata. Cuta ce da ba kasafai ba ke haifar da yawan adadin ƙwayoyin mast ɗin a cikin fata waɗanda ke haifar da amya ko raunuka a kan fata lokacin da fushi. Ana yawan ganin tabo ja ko launin ruwan kasa akan fata, yawanci a kusa da kirji, goshi, da baya. Wadannan kwayoyin mast, lokacin da suka fusata (misali ta hanyar shafa fata, zafi mai zafi), suna samar da histamine mai yawa, yana haifar da rashin lafiyan halayen da ke haifar da amya da aka gano zuwa wurin fushi, wani lokaci ana kiransa "alamar Darier".

☆ A cikin sakamakon Stiftung Warentest na 2022 daga Jamus, gamsuwar mabukaci tare da ModelDerm ya ɗan yi ƙasa kaɗan fiye da biyan shawarwarin telemedicine.
  • Yana faruwa ne a jikin ƙananan yara.
  • Shafa rauni da ƙarfi na iya haifar da kumburi.
References Urticaria Pigmentosa 29494109 
NIH
Mastocytosis wani yanayi ne da ake samun yawan mast cells, sau da yawa ana samun su a sassa daban-daban na jiki kamar fata, bargon kashi, da tsarin narkewar abinci. A cewar Hukumar Lafiya ta Duniya (WHO) , cutaneous mastocytosis za a iya kasasu zuwa manyan iri uku. Nau'in farko (mastocytomas) ya ƙunshi raunuka kaɗai ko kaɗan (≤3) . Nau'i na biyu (urticaria pigmentosa) ya ƙunshi raunuka da yawa, yawanci daga sama da 10 zuwa ƙasa da 100. Nau'in na ƙarshe yana nuna sa hannu a cikin fata. Urticaria pigmentosa shine mafi yawan nau'in mastocytosis na cutaneous a cikin yara, amma kuma yana iya faruwa a cikin manya. Yawanci yanayin rashin lahani ne wanda sau da yawa yakan inganta yayin samartaka. Ba kamar manya mastocytosis ba, urticaria pigmentosa da wuya yana shafar gabobin ciki. Ɗayan siffa ta musamman ta urticaria pigmentosa shine halin sa na haifar da ƙanƙanta, ƙaiƙayi, ja-ja-jaja, ko tabo mai launin rawaya-kasa ko raunuka akan fata, wanda akafi sani da amya. Waɗannan tabo yawanci suna bayyana a lokacin ƙuruciya kuma suna iya wucewa tsawon rayuwa.
Mastocytosis is a disorder characterized by mast cell accumulation, commonly in the skin, bone marrow, gastrointestinal (GI) tract, liver, spleen, and lymphatic tissues. The World Health Organization (WHO) divides cutaneous mastocytosis into 3 main presentations. The first has solitary or few (≤3) lesions called mastocytomas. The second, urticaria pigmentosa (UP), involves multiple lesions ranging from >10 to <100 lesions. The last presentation involves diffuse cutaneous involvement. UP is the most common cutaneous mastocytosis in children, but it can form in adults as well. It is considered a benign, self-resolving condition that often remits in adolescence. Unlike adult forms of mastocytosis, there is rarely any internal organ involvement in UP. What makes UP particularly distinctive is its tendency to manifest as small, itchy, reddish-brown, or yellowish-brown spots or lesions on the skin, commonly referred to as urticaria or hives. These spots typically appear in childhood and can persist throughout a person's life.
 Urticaria pigmentosa - Case reports 26752589 
NIH
Wata yarinya ‘yar shekara 6 ta shigo dauke da wasu diloli masu duhu wadanda suka fara bayyana a fatar kan ta sannan suka bazu a fuskarta da jikinta tsawon watanni shida da suka gabata. Ta ambata jin sun tashi, sun yi ja, da ƙaiƙayi lokacin da aka matsi. Ba ta fuskanci firgita, amai, gudawa, ko hushi ba, kuma tarihin likitanta na sirri da na dangi bai ba da alamun da suka dace ba. Bayan an duba, mun sami ɗimbin duhu a fatar kai, goshinta, fuska, da wuyanta, tare da ɗan ɗaga mata duhu a ƙirjinta da bayanta. Shafa wuraren a hankali ya sa su kumbura da ƙaiƙayi a cikin mintuna 2, amma alamun sun ɓace cikin mintuna 15-20 (Darier's sign) .
A 6-year-old female, presented with multiple dark-colored lesions, which started over the scalp and further progressed to involve the face and trunk since past six months. She gave a history of elevation, redness, and itching on the lesions on application of pressure. There was no associated flushing, vomiting, diarrhoea, or wheeze. The personal and family history was not contributory. On examination, there were multiple hyperpigmented macules over the scalp, forehead, face, and neck in addition to minimally elevated hyperpigmented plaques over the chest and the back. Gentle rubbing of the lesions elicited urtication and itching within 2 min and it resolved within 15–20 minutes, suggestive of the Darier's sign.