The second factor of menstruation, the flow, we can influence by such measures as cause a more or less intense pelvic congestion. The ovaries sharing in this congestion, it is not impossible that ovulation is in some degree also promoted, but it can be only to a minor degree and when the ovaries are in a favorable condition. The uterus is the principal organ to be affected, and to it the most of these measures are addressed.
Direct treatment for the establishment of menstruation should be first of a character rather to solicit than to force the flow. These measures act best where, the general health having been restored, the flow does not appear, but the premonitory symptoms are present. Rest in bed, warmth to the pelvic region by poultices or other means, and hot drinks, are to be prescribed; among the latter infusions of pennyroyal, some of the mints, tansy, and cotton-root have a high domestic reputation and should be preferred. Hot pediluvia or hot sitz-baths, prolonged to twenty or thirty minutes, may be taken at bedtime. These may be rendered sufficiently stimulating to irritate the skin by the addition of mustard. More active measures are stimulating enemata and vaginal injections—for the former ten grains of aloes in mucilage, and for the latter liquor ammonia in milk, fluidrachm j-pint j, gradually increasing the strength to production of slight leucorrhoea. Both these have the endorsement of high authority.
Such measures should be used or plied more assiduously about the period, when that is known. During the interval a tonic course is almost always required, and a powerful local influence can be exerted by cold sitz-baths of brief duration, say one or two minutes, once daily, followed by vigorous rubbing with a coarse towel or a flesh-brush.
There are a few drugs known as emmenagogues from the reputation they have of promoting the menstrual flow. They all are powerful stimulants or irritants, and as they are also nearly all abortifacients, their reputation is probably well founded. Modern physiology, by exploding the doctrine of peccant humors to be carried off by menstruation, and by establishing the doctrine of ovulation, has greatly diminished their importance, while the varied conditions and causes of amenorrhoea already given show at a glance how restricted is the field for their administration. To give them when the anatomical conditions are unknown is blind work; to force a function relating to reproduction when the general system is struggling for existence is folly; and to goad diseased organs with special stimulants is certain to do injury. Now and then, however, special stimulants of this class and of the class next to be considered are required. There are some cases which fail to respond to the measures already detailed; there are others, generally recognized by writers, when menstruation is absent without any deterioration of health, known as cases of sexual atony or torpor; and others in which the flow fails or disappears earlier than the usual age. In these latter atrophy of the ovaries may be suspected, but cannot be verified during life, and treatment should be faithfully continued so long as there is reasonable probability of success. One case occurred in the experience of the writer in which the menses appeared occasionally during two years, each time apparently brought on by special stimulants, but ceased at thirty-two, the general health remaining excellent.
The principal emmenagogue drugs heretofore relied on, besides iron, are saffron, apiol, rue, and savin. The first, from impurity and costliness, is rarely prescribed, yet Trousseau says it is a fact of public notoriety that women engaged in picking saffron suffer from frequent attacks of uterine hemorrhage. Apiol may be given in capsules in doses of five or six drops twice daily for a week before the expected flow, or fifteen drops may be administered in the course of the few hours immediately preceding. The oils of savin and rue are generally prescribed in doses of minim ij-v, three times daily. Ergot and iodine figure sometimes as emmenagogues. The efficacy of the former is denied by very high authority. The latter was esteemed very highly by Trousseau. Its influence upon the scrofulous constitution may possibly explain its action in promoting menstruation.
The permanganate of potassium is a recent addition to emmenagogues, and the testimony in its favor is already sufficient to make it probable that it is the most efficient of the list. The indications for its use are want of action or atony of the organs. It should be administered during a few days or a week preceding the time for menstruation, in doses of from two to four grains three times daily; or two grains three times daily may be administered during the whole month. The union of its elements is but feeble, so that in pills as ordinarily made it would be very likely to undergo decomposition, while in solution it is unpleasant. Compressed tablets of the pure drug are now placed at command of the profession, and are an unexceptionable form for administration. The best time for taking the medicine is toward the close of the digestive process, and each dose should be followed by drinking at least a wineglassful of water. Pain in the stomach has been sometimes observed even when every precaution has been taken. The liability of the remedy to decomposition and its irritating powers are objections to it, but the testimony in favor of its power to bring on or promote the menstrual flow is at present very strong.
More decided measures of local stimulation than those already given may be resorted to, and are far more reliable than drugs. They are—tents, cupping the uterus, and electricity. A sea-tangle or tupelo tent may be kept in the uterus over night just previous to the time of the flow. In cases where stimulation rather than dilatation is needed a tent of slippery-elm bark may be used. Thomas recommends a rubber exhauster for cupping the cervix uteri. Simpson fashioned one for acting on the lining membrane of the body. These measures are most likely to be efficacious just before an expected period.
Electricity is the most reliable emmenagogue, and has such an amount of testimony in its favor as not to permit a doubt as to its value. It is the only direct uterine or menstrual stimulant except permanganate of potassium. Statical electricity is now but little used, although Golding-Bird published striking instances of its efficacy in amenorrhoea at an early day in its therapeutic history. Faradization is now most frequently resorted to. One pole is to be applied to the sacrum and the other above the pubes or over either ovary. The internal application of the current is much more powerful as well as less painful. It is administered by applying a cup-shaped electrode to the cervix, or by introducing an insulated sound into the uterus, the other electrode being external as before. The séances should be repeated every second or third day, and should be more frequent just before the periods when their time is known. Beard and Rockwell insist that general electrization should be administered at the same time, and Mann passes the constant current through the organs during the intervals and the faradic at the periods. Simpson originated a galvanic intra-uterine pessary, which Thomas has modified. It is doubtful whether the feeble current generated by these instruments produces any effect, or whether they act simply as mechanical irritants. When they are used, it should be borne in mind that there is eminent and high authority against the use of intra-uterine pessaries of any kind, and that all agree that a patient to whom one is applied should be kept under careful observation.
It must be stated that good results have been obtained with this class of local remedies in cases which would seem extremely unpromising—even in those in which amenorrhoea depends upon partially-developed organs. There is most positive testimony of the highest character as to good effects obtained in increasing development and promoting the flow.
Cases of acute suppression are to be treated by rest in bed, warmth locally by baths and applications, and hot drinks, as already detailed. Steaming the lower part of the body by placing the patient over the vapor arising from aromatic herbs upon which boiling water has been poured is a remedy which dates back to Hippocrates. Early in the case a drink of spirituous liquor, taken hot, is often efficacious. If, however, there is febrile action, diaphoretics should be administered, such as the liquor ammonii acetatis with spirits of nitrous ether, and aconite if required. Dry or wet cupping may be used if there is evidence of intense uterine congestion. Should internal metritis or inflammation of some pelvic organ result from acute suppression, the treatment will be that for the disease thus caused. If efforts to restore the suppressed flow do not prove speedily successful, special measures should be postponed until the next period, the general health meantime receiving due attention. At the return of the next period such of the remedies for amenorrhoea should be administered as may seem best adapted to the case, considered as to cause, condition of the organs, or constitution of the patient.