Erayga "phthisis" (mararka qaarkood loo higaadiyay "phthisis") caadi ahaan waxa ay tilmaamaysaa xaalad caafimaad, oo sidoo kale loo yaqaano qaaxada sambabada, taas oo saamaysa sambabada oo keenta in jidhka si tartiib ah u lumo. Waa erey qadiimi ah oo hore loo isticmaali jiray si loogu qeexo noocyada kala duwan ee cudurrada wasakhowga ah, gaar ahaan kuwa saameeya sambabada ama xubnaha kale ee muhiimka ah. Eray bixinta caafimaadka casriga ah, ereyga "phthosis" waxaa guud ahaan loo adeegsadaa kaliya si gaar ah loogu tixraaco qaaxada sambabada.