Every physician knows that much less serious mental influences than a profound shock or fright may somewhat disturb menstruation and, in young women at least, this disturbance is nearly always in the direction of lessened flow and amenorrhea.
"Psychotherapy"
James J. Walsh
Occasionally diseases of other ductless glands, as the thyroid, may have amenorrhea as one of the first symptoms.
"Psychotherapy"
James J. Walsh