Mariners, Plowmen, Soldiers, & all manner of Artizans, have their peculiar termes and words, which are neither knowne, nor used by the vulgar; so this word Indicati∣on is proper and peculiar to Philisitions and Chirurgeons, as a Terme of Arte not vulgar; by consideration of which, as by some signe, or secret token, they are admo∣nished what is to be done to restore health, or repell an imminent danger.
There are three prime and principall kinds of Indications, every of which is subdi∣vided into many other. The first is from things naturall. The second from these things which are termed not naturall. The third from those things which are contrary to na∣ture. Things naturall shew they must be preserved by their like, and in the compasse of these are contained all the Indications which are drawne from the nature of the Patient, that is, from his strength, temper, age, sexe, habit, custome, diet.
Things not naturall may be doubted as uncertaine, for one while they indicate the same things with things naturall, that is, they coindicate with the strength, temper and the rest; otherwhiles they consent with things against nature, that is, they coindi∣cate with the disease. Wherfore Galen when he saith, that Indications are drawn from three things; The disease; The nature of the Patient, and the encompassing aire, by proposing the familiar example of the aire, hee would have us to understand the o∣ther things not naturall; because wee may shun, or embrace them more or lesse as we will our selves, but we must, whether we will or no, endure the present state of the aire. Therefore the aire indicates something to us, or rather coindicates; for if it nourish the disease, as conspiring with it, it will indicate the same that the disease, that is, that it must be preserved in the same state.
Things contrary to nature indicate they must be taken a way by their contraries; Therefore that we may more accurately and fully handle all the Indications drawne from things naturall, we must note, that some of these are concerning the strength of the Patient, by care to preserve which, we are often compelled for a time to forsake the cure of the proper disease: for so a great shaking happening at the beginning of an ague or feaver, we are often forced to give sustenance to the Patient, to strengthen the powers shaken by the vehemency of the shaking, which thing notwithstanding lengthens both the generall and particular fitts of the ague. Other pertaine to the temper, other respect the habite, if the Patient be slender, if fat, if well flesht, if of a rare, or dense constitution of body. Other respect the condition of the part affected in substance, consistence, softnesse, hardnesse, quicke or dull sense, forme, figure, mag∣nitude, site, connexion, principallity, service, function and use, From all these, as from notes the skilfull Chirurgion will draw Indications according to the time and part affected: for the same things are not fit for sore eyes, which were conveni∣ent for the eares, neither doth a Phlegmon in the jawes and throat admit the same forme of cure, as it doth in other parts of the body. For none can there outwardly apply repercussives, without present danger of suffocation. So there is no use of re∣precussives in defluxions of those parts which in site are neere the principall. Nei∣ther must thou cure a wounded Nerve and Muscle, after one manner. The tempe∣rature of a part, as Moisture, alwayes indicates its preservation, although the disease be moist and give Indication of drying, as an ulcer. The principallity of a part al∣wayes insinuates an Indication of astringent things, although the disease require dissolving, as an Obstruction of the Liver; for otherwise unlesse you mixe astringent things with dissolving, you will so dissolve the strength of the part, that hereafter it cannot suffice for sanguification. If the texture of a part be rare, it shewes it is lesse apt, or prone to obstruction; if dense, it is more abnoxious to that disease; hence it is that the Liver is oftener obstructed than the Spleene. If the part be scituate more deepe, or remote, it indicates the medicines must be more vigorous and liquid, that they may send their force so farre. The sensiblenesse, or quicke-sense of the part, gives Iudication of milder medicines, than paradventur the signes, or notes of a great disease require. For the Phisition which applies things equally sharpe to the Horny tunicle of the eye being ulcerated, and to the Legge, must needs be accounted either cruell, or ignorant. Each sexe and Age hath its Indications, for some diseases are curable in youth, which we must not hope to cure in old age; for hoarsenesse and great distillations in very old men, admit no digestion, as Hippocrates saith;