Iftiinka bilidu waa qalab daawayn iftiin ah oo lagu daweeyo cagaarshow dhawaan dhashay (hyperbilirubinemia).Heerarka sare ee bilirubin waxay sababi kartaa dhaawac maskaxda ah (kernicterus), taasoo keenta curyaan maskaxeed, neuropathy maqalka, cilladaha aragga iyo dhaldhalaalka ilkaha hypoplasia.Daawadu waxay isticmaashaa iftiin buluug ah (420-470 nm) kaas oo u beddelaya bilirubin qaab ka soo bixi kara kaadida iyo saxarada.Ookiyaale jilicsan ayaa la saaraa ilmaha si loo yareeyo dhaawaca isha ee iftiinka xoogga badan.