Other patent medicines, and, indeed, some of the proprietary preparations, commonly recommended as nutrients and the like, and supposed to be ethical, are found to owe whatever efficiency they have to their alcoholic content. Here once more the suggestive elements were the more important, and enabled substances of little physical efficiency to produce effects that seemed to indicate the presence of powerful energizing materials.
Whiskey in Snake-Bites .—A typical example of a remedy which owes its efficacy to mental influence over the patient is the use of whiskey for snake-bites. It is generally recognized that whiskey is not only of no special beneficial effect for snake-bite, but that when taken in the large quantities usual in such cases it probably produces an ill effect by disturbing the patient's general condition and lowering his resistive vitality. I have no doubt, however, that its use in considerable quantities has in these cases proved of value because of the mental effect upon the patient. Ordinarily a snake-bite is followed by a sense of extreme terror and prostration that lowers the resistive vitality. This is overcome by the temporary stimulation of the alcohol. The generally accepted idea that whiskey is almost a specific remedy for snake-bite takes away from most people this dread and consequent depression, and does this especially at a time when the acuter symptoms of the venom are making themselves felt. Only about one in six even of those bitten by large rattlesnakes are likely to die. Many circumstances are in their favor. The bite is not likely to be fatal unless the full contents of the poison sac is injected—which will not be done if the sac has been emptied in the preceding twenty-four hours—and if there are any obstacles, such as clothing or even hair, on the part struck by the snake. Most people, however, would almost die from fright, and such a thing is quite possible, if they thought there was no remedy. The fact that they understand that alcohol is an almost infallible remedy gives them courage, and as soon as they receive some whiskey and it begins to take effect this intense depression is relieved.
It would be better if the knowledge we now have as to snake-bites were more generally used, and if people understood that only rarely is such an accident fatal. In this way there would be no necessity for an appeal to mental influence through whiskey. It is probable, however, that alcohol will still be used for many years, at least in the country districts, because the supposed knowledge is too widely diffused for a correction to come soon, and then other modes of treatment have not that persuasive mental influence which whiskey has as the result of the long tradition. There are many other popular remedies for snake-bite not quite so inefficient as whiskey, but that will continue to enjoy a reputation and really have a certain efficacious result as a consequence of the expectant attitude evoked by the fact that for as long as the patient has heard anything about these things this particular remedy has been mentioned always as the one thing sure to do good.
Other Cures.—Fontana, toward the end of the eighteenth century, was sure that he had discovered in caustic potash an absolute specific for snake poisoning. He had had a series of cases, and felt that he had actually observed this substance following the snake poison into the system and neutralizing it. Its active effect on the external tissues proved eminently suggestive for the patient and good results followed. We have had many specifics since, and yet we are not quite sure how much any of them avail unless recent biological remedies prove lasting in their effects and are really of therapeutic efficiency.
Antidotes and Suggestion.—For many other poisons beside snake venom there have been announced supposed antidotes of all kinds. The literature of the antidotes used for opium is extremely interesting and even in recent times contains many disillusions. Twenty years ago our medical journals contained any number of cases in which a solution of potassium permanganate seemed to have proved effective in neutralizing not only opium itself but its alkaloids and derivatives. Not only was it efficacious, then, if taken while the opium was still in the stomach but, just as with Fontana's caustic potash and the snake venom, it followed the opium into the tissues and at least blunted its action. Numbers of cases were reported in which potassium permanganate was supposed to have had this desirable effect. The effect of alcohol in neutralizing carbolic acid attracted as much attention as did potassium permanganate for opium. Here there was no doubt that alcohol immediately after the external application of carbolic acid did prevent its corrosive action. It was supposed to do the same thing in the stomach and even, as some enthusiastic observers thought, followed the carbolic acid into the tissues. Here once more the claim is not proven and it is evident that the influence on patients' minds when small doses of carbolic acid were taken, was the real therapeutic factor at work.
Poultices in Suggestive Therapeutics.—Poultices represent another phase of the value of suggestion in medicine and surgery, though for many centuries those who used them were sure that the reasons for their employment were entirely physical and not psychic. All sorts of poultices have been used and each was supposed to do specific curative work. New forms of poultice material have been introduced, and physicians and patients have been certain that each worked wonders of its own. The drawing power of the poultice was extolled until patients dwelt on the idea that this external application was literally engaged in extracting from them, even from distant portions of their anatomy, virulent material that would do harm if allowed to remain in them. Poultices in suitable cases, because they represent moist heat, do good by counter irritation, by bringing about the expulsion of gas, by diverting internal hyperemia to external tissues, but most of their supposed efficacy has been really due to the bother required to prepare and apply them, the discomfort of having them on, and the feeling that now something had been done and the aches and pains must get better. They are still used, but to a much less degree than before. Now the ordinary teaching is that a hot water bag wrapped in dry flannel, if dry heat is the agent desired, and in moist flannel, if moist heat is the desideratum, is much more efficient. It takes but a few minutes for a poultice, no matter how hot when applied—and occasionally in the olden time they were applied so warm as to burn or scald—to decrease in temperature to that of the body. After that they represent only a moist compress.
It is easy to understand that the suggestive influence of poultices might serve for an age that knew less about the realities of the efficacy of external applications than ours. As a matter of fact, we have, nevertheless, shown ourselves to be quite as credulous and ready to receive analogous remedies as the past generation. With the waning of the popularity of the poultice, not only among the profession, but also among the people generally, there came into use various plasters which were supposed to have even more wonderful efficacy than the poultice of the olden time. These required a good deal of trouble to apply and once applied remained on for hours, and so continued to produce a definite curative effect on patients' minds. When first introduced, exaggerated claims were made for their therapeutic value and a regular crusade to diffuse correct information regarding them had to be made, in order to set them in their proper place as mere wet compresses, without any therapeutic efficiency beyond that of cloths wrung out in water and kept in touch with the skin.
Poultices and the Doctrine of Signatures .—There was a general impression in the past that the indication of the ailment for which substances are medically useful has been set on them by nature, either through the color, or the form of the plant, or other qualities. In general, the law of similars is supposed to hold in the doctrine of signatures—like cures like. Hence the cornmeal poultice for light jaundice, the flax-seed meal poultice for darker jaundiced conditions and for tendencies to gangrene. The charcoal poultice was employed for this same purpose with no better reason, though some of its efficacy may have been due to oxygen present in the pores of the charcoal. I have already spoken of the appeal to the patient's mind in the use of the cranberry for erysipelas, and various other berries were used in like manner on the doctrine of signatures.
Deterrent Materials and Suggestion .—Another basic principle in the making