<prompt> At what period does tuberculosis flare up most commonly in a pregnant patient?First trimesterSecond trimesterThird trimesterPuerperium  <response>: Puerperium demands more Kcals Extra 500 Kcal Vs extra 300 kcal in pregnancy and more proteins 65 Vs 60 gms in pregnancy. This combined with immuno-suppression, the poor nourishment of Indian women, along with overcrowding in a small home and the heat and humidity of tropical countries makes an ideal situation for tuberculosis to strike and thrive. 