Barnes, Stepanoff, and Field adduce examples of this anomaly.

Jouilleton relates an instance of menstruation from the right ear for five years, following a miscarriage.
Hemorrhage from the mouth of a vicarious nature has been frequently observed associated with menstrual disorders.

The Ephemerides, Meibomius, and Rhodius mention instances.

The case of Meibomius was that of an infant, and the case mentioned by Rhodius was associated with hemorrhages from the lungs, umbilicus, thigh, and tooth-cavity.
Allport reports the history of a case in which there was recession of the gingival margins and alveolar processes, the consequence of amenorrhea.

Caso has an instance of menstruation from the gums, and there is on record the description of a woman, aged thirty-two, who had bleeding from the throat preceding menstruation; later the menstruation ceased to be regular, and four years previously, after an unfortunate and violent connection, the menses ceased, and the woman soon developed hemorrhoids and hemoptysis.