CHAP. XIX. Of Anodynes, or such as mitigate or asswage pain.
BEfore we treat of Anodyne medicines, we think it fit to speak of the nature of pain. Now pain is a sorrowful and troublesome sense, caused by some sudden distemper, or solution of continuity. There are three things necessary to cause pain; The efficient cause, that is, a sodain departure from a natural temper or union: the sensibleness of the body receiving the dolorifick cause: lastly, the apprehension of this induced change, caused either by distemper or union; for otherwise with how exquisite soever sense the body receiving the cause is indued with, unless it apprehend and mark it, there is no pain present. Hence it is that Aphorism of Hip∣pocrates, Quicun{que} parte aliquâ corp••ris dolentes dolorem omnino non sentiunt, his mens aegrotat, that is, Whosoever pained in any part of their bodies do wholly feel no pain, their understanding is ill affected and depraved. Heat, cold, moisture and driness, induce a sodain change of temper; and heat and cold cause sharp pain, driness moderate, but moisture scarce any at all: for moisture causeth not pain so much by its quality, as it doth by the quantity. Both the fore-mentioned qualities, especially associated with matter, as also certain external causes too violently assailing, such as these that may cause contusion, cut, prick, or too much extend. Wherefore pain is a symp∣tom of the touch, accompanying almost all diseases; therefore oft-times leaving these, they turn the counsel of the Physician to mitigate them, which is performed either by mitigating the effici∣ent causes of pain, or dulling the sense of the part. Hereupon they make three differences of Ano∣dynes: For some serve to cure the disease, othersome to mitigate it, othersome stupifie, and are narcotick. We term such curative of the diseases, which resist, and are contrary to the causes of di∣seases. Thus pain, caused by a hot distemper, is taken away by oil of Roses, Oxycrate, and other such like things, which amend and take away the cause of pain, to wit the excess of heat. Pain caused by a cold distemper, is amended by Oleum Laurinum, Nar dinum, de Castoreo. Pain occasioned by too much driness is helped by Hydraelium, a bath of fresh and warm water. Lastly, by this word Anodyne, ta∣ken in the largest sense, we understand all purging medicines, Phlebotomony, Scarification, Caute∣ries, Cuppings, Glysters, and other such like things as evacuate any store of the dolorifick matter. But such as are properly termed Anodynes, are of two sorts: for some are temperare, others hot and moist in the first degree, and consequently, near to those that are temperate: these preserve the na∣tive heat in the proper integrity, thus they amend all distemperatures; of this kinde are accounted