Ma'anar ƙamus na hypercalcemia shine wuce haddi na calcium a cikin jini, yawanci ana bayyana shi azaman matakin sinadari na sinadirai fiye da 10.5 milligrams per deciliter (mg/dL) ko 2.625 millimoles a kowace lita (mmol/L). Ana iya haifar da wannan yanayin ta hanyoyi daban-daban, ciki har da glandan parathyroid masu aiki da yawa, wasu nau'in ciwon daji, yawan shan bitamin D, ko kuma rashin motsi na tsawon lokaci. Alamomin hypercalcemia na iya haɗawa da gajiya, tashin zuciya, maƙarƙashiya, ruɗewa, da raunin tsoka, da sauransu, da wasu lokuta masu tsanani na iya haifar da duwatsun koda, ciwon kashi, ko ma ciwon zuciya mai barazana ga rayuwa.