Barnes saw a case in St.George's Hospital, London, 1876, in which the young girl menstruated vicariously from the nipple and stomach.

In a London discussion there was mentioned the case of a healthy woman of fifty who never was pregnant, and whose menstruation had ceased two years previously, but who for twelve months had menstruated regularly from the nipples, the hemorrhage being so profuse as to require constant change of napkins.

The mammae were large and painful, and the accompanying symptoms were those of ordinary menstruation.

Boulger mentions an instance of periodic menstrual discharge from beneath the left mamma.

Jacobson speaks of habitual menstruation by both breasts.