Kalmar "haemophilia" tana nufin mutumin da ke da haemophilia, wanda cuta ce ta kwayoyin halitta da ke shafar karfin jini. Yawanci wannan yanayin yana faruwa ne sakamakon gazawar wasu abubuwan da ke haifar da toshewar jini a cikin jini, wanda zai iya haifar da tsawaita zubar jini bayan rauni ko tiyata, a wasu lokuta kuma zubar da jini na kwatsam zuwa tsoka da gabobi. Haemophilia wani yanayi ne da ba kasafai ake samun gado ba kuma yana shafar maza.