Anointing of the Sick is a sacrament of the Catholic Church that is administered to a Catholic "who, having reached the age of reason, begins to be in danger due to sickness or old age", except in the case of those who "persevere obstinately in manifest grave sin". Proximate danger of death, the occasion for the administration of Viaticum, is not required, but only the onset of a medical condition considered to be a possible prelude to death.