I have a theory on why this mother is having night sweats. Having just completed some reading on menopause, it was stated that the most common symptom reported was "hot flashes", also called "night sweats" when they occur at night (Moore, R., 1997). These are primarily caused by estrogen deficiency, triggering the release of the neurotransmitter norepinephrine. This in turn affects the temperature regulation center of the brain, the hypothalamus and causes a sensation of warmth. Sweating often results in the body's attempt to cool itself. It makes sense that this could be the cause of the condition in the mother you described, since decreased circulating estrogen is common in breast-feeding. Just a thought! Cindy Anderson, MS, CNS, IBCLC University of ND Moore, R. (1997). Clinical Considerations in Acute-Onset Menopause, A Self-Study Module.