Inunction n. The act of anointing, or the state of being anointed; unction; specifically (Med.), the rubbing of ointments into the pores of the skin, by which medicinal agents contained in them, such as mercury, iodide of potash, etc., are absorbed.
... the head of a child of nine for the relief of tinea tonsurans caused diarrhea, profuse salivation, marked prostration, and finally death. Washing out the vagina with a solution of corrosive sublimate, 1:2000, has caused severe and even fatal poisoning. Bonet mentions death after the inunction of a mercurial ointment, and instances of distressing salivation from such medication are quite common. There are various dermal affections which sometimes follow the exhibition of mercury and assume an erythematous type. The susceptibility of some persons to calomel, the ... — Anomalies and Curiosities of Medicine • George M. Gould