Hi, Ginna Wall again, this time responding to the discussion about postpartum hemorrhage and its effect on milk production. There is a rare syndrome called Sheehan's Syndrome, in which a severe postpartum hemorrhage, causing hypotensive shock, results in blood being shunting away from the anterior pituitary gland. When this happens, there can be a temporary or permanent hypopituitarism, and the first sign is failure of the milk to come in. I've seen it once (I THINK; diagnosis was not confirmed and the patient was lost to follow-up) in fifteen years of working in a high-risk perinatal referral center. Not too common!