Ziphuphu za pakhungu nthawi zambiri zimayamba kutha msinkhu, koma nthawi zina zimapitirira mpaka munthu wamkulu. Zimagwirizanitsidwa ndi zotupa zomwe zimachitika mu zotupa za sebaceous zomwe zimatulutsa sebum yochulukirapo, kusiya ziphuphu ndi zilema kuti ziwonekere.

Akakula, ziphuphu zakumaso zimakhala zovuta kufotokoza. Kawirikawiri, ziphuphu zazing'ono zimatha kuchitika mwa amayi pafupifupi sabata imodzi isanayambe kusamba, zomwe zimakhala zachilendo. Kutenga njira zakulera za m'thupi, kutenga pakati ndi kusintha kwa msambo kuthanso kukhala ndi udindo, chifukwa zonse zili pa chiyambi cha kusinthasintha kwa mahomoni ...