Leslie: Although I'm not sure how common nausea is with hot flushes (I'll check the literature about menopause, but I haven't seen this as a complaint among my menopausal patients), there is one possible explanation for hot flushes during lactation. Breastfeeding is a hypoestrogenic state, so it is conceivable that some breastfeeding moms might feel hot flushes (again, I have not seen this, but I'll read your reference). Alicia. [log in to unmask]