The gastric troubles that occur during menstruation are regarded by _P. Müller_ as a further indication of the intimate connection between the genital organs and the digestive tract. In women who suffer from hysterical manifestations, gastric disturbances, cardialgia, and nervous dyspepsia, are very frequently associated with menstruation. These gastric symptoms generally make their appearance a few days before menstruation is due, and disappear as soon as the flow is established. In other forms, again, the digestive troubles set in with the appearance of the flow, to disappear during the later course of menstruation; and in yet other cases the gastric disturbance begins even later, and ceases only when the flow comes to an end. These symptoms may occur in women in whom the genital organs are perfectly healthy and in whom menstruation runs a regular course. More severe symptoms may, however, appear if menstruation is disturbed for any reason, or if it is suppressed. Not rarely such women, when they become pregnant, suffer, especially during the early months, from dyspeptic symptoms; but similar dyspepsia may occur in pregnant women who have previously been quite healthy.
To the same category belong the cases formerly described by _von Leyden_ under the designation of neuralgia and hyperæsthesia of the stomach, which he observed in young girls as a sequel of menstrual disturbances, and more particularly of _suppressio mensium_. In these circumstances, the sensibility of the stomach may become so extreme that every time food is taken the patient suffers from such severe pains, or from so distressing a sense of anxiety and oppression, that she comes to eat less and less, and an extreme degree of emaciation and marasmus results. In one such case, congenital atrophy of the uterus was discovered on gynecological examination.
According to _R. Arndt_, it is especially in chloro-neurotic individuals that the stimuli proceeding from morbid conditions of the reproductive organs frequently induce, by reflex action, all kinds of disturbances of the alimentary tract, such as constipation and flatulence, gastric uneasiness and loss of appetite, weakness of digestion, cardialgia, and stricture of the œsophagus. Even simple menstruation suffices to give numerous proofs of this fact, but still more do such consequences arise from serious diseases of the reproductive organs, such as changes in form, displacements, and inflammatory states, and also, on the other hand, more or less pronounced hypoplasia.