Ama-blackheads akhiwa xa iigland ze-sebaceous zivelisa ioli engaphezulu kunye neeseli zesikhumba ezifileyo azikhutshwanga kakuhle, zivelisa iplagi ekuvulekeni kwepore. Iihomoni, iigenetics, izimonyo ezithile, ukutshaya, ukutya, kunye nomonakalo wesikhumba (kubandakanya i-UV) konke kunokunceda kule nkqubo.
Ngokwakho, ama-blackheads awanabungozi kwaye ikakhulu adala ukukhathazeka kwezimonyo nangokwengqondo. Nangona kunjalo, ama-comedone amaninzi anokubonisa iingxaki zehomoni okanye ze-metabolic kwaye anokukhula abe yi-acne evuthayo ukuba iintsholongwane zikhula ngaphakathi kwepore evaliweyo.
Ama-blackheads amancinci, awodwa angakukhathazi aqhelekileyo akadingi kunyango kwaye anokucaca ngokwawo. Ukuze ufumane ama-comedone amaninzi okanye angapheliyo, unyango luhlala lubandakanya ukuhlamba okuthambileyo, i-exfoliant zekhemikhali (ezifana ne-salicylic acid), i-retinoid, kwaye ngamanye amaxesha kukhutshwa ngokomsebenzi okanye i-peels phantsi kolawulo lwegqirha wesikhumba okanye umcwaningi wezimonyo.