ari Mongolian kana bhuruu mavara (congenital dermal melanocytosis) inoonekwa mune vamwe vacheche pakuzvarwa kana mumavhiki ekutanga ehupenyu. Iyo inowana zita re «Mongolian gwapa», sezvo ichioneka kazhinji mu Asia, American American, Africa uye Indonesian nhangemutange. Iripo mune makumi mapfumbamwe muzana evana vachangozvarwa emarudzi aya, muCaucasians inongowanikwa mu 90-1% yematambudziko, zvichitonyanya kushomeka.
Ganda remwana achangozvarwa rinoratidzika rakasviba ne bhuruu, bhuruu-girini kana bhuruu-grey hue, kunyanya munzvimbo ye musana, magaro, mapendekete uye kazhinji kashoma pazvidya, maoko kana tsoka. Maumbirwo uye kukura kwaro kwakasiyana siyana, zvichiratidza kutenderera kwakapetana, hunhu uhwu hunovaita kuti vavhiringidzwe nehematoma kubva pakubereka (mavanga).
Kwayakabva iri mune kuunganidzwa kwemelanocytes (masero anokonzera kugadzirwa kwemelanin uye kudzivirirwa kubva kumwaranzi yezuva muganda). Mhedzisiro yechiedza pane aya ma "melanocyte" anowanikwa akadzika mukati medermis ndizvo zvinopa iro bhuruu bhuruu, semhedzisiro yeiyo Tyndall mhedzisiro (pakadzika ikoko kweganda mavara matsvuku neyero haana kuratidzwa).
Kana mwana wedu aine mavara aya tinofanirwa kuziva kuti anowanzo kuve akaipa, Izvo hazvina kukosha kune hutano hwemwana wedu uye zvinonyangarika pakarepo mumakore ekutanga ezera. Chinhu chinowanzoitika ndechekuti inonyangarika kutenderera makore maviri, kunyangwe paine nyaya dziripo dzinosvika makore mapfumbamwe kana gumi. Nguva dzose zvakakodzera kubvunza kuna chiremba wevana, uyo achasimbisa kuvepo kweichi chiratidzo chekuzvarwa uye kutivimbisa nezvazvo.
Kana mwana wehutano wezvehutano aona kuvepo kwenzvimbo idzi, hapana yekutevera inodiwa, nekuti sezvatataura, ivo vanozonyangarika vega sekukura kwemwana wedu.