Dysphoric Milk Ejection Reflex (D-MER) is a condition affecting lactating women, characterized by abrupt episodes of dysphoria, or negative emotions, occurring just before milk let down. Alia Macrina Heise, a lactation specialist, identified D-MER in 2007 after experiencing symptoms personally while breastfeeding her third child. Learn more about your ad choices. Visit megaphone.fm/adchoices