Bloody nipple discharge (BND) is occasionally observed in women with mammary disorders such as mastitis, intraductal papilloma, or breast carcinoma. However, this phenomenon is rarely seen in infants and children; BND in infants has seldom been reported in the dermatologic literature.
A 4-month-old girl was referred to our clinic with a 1-week history of unilateral BND. Her mother reported a spontaneous and intermittent BND from the infant's left breast and denied breast manipulation or trauma. The infant was healthy except for BND and had no history of taking medication. The mother had no history of drug ingestion during either pregnancy or breastfeeding.
Ujiie H, Akiyama M, Osawa R, Shida S, Aoyagi S, Shimizu H. Bloody Nipple Discharge in an Infant. Arch Dermatol. 2009;145(9):1068-1069. doi:10.1001/archdermatol.2009.198