The scenario:
25 y.o G0 patient (she/her) comes into the clinic for an emergency department (ED) follow up. She has a history of endometriosis and has been using a LNG 52mg IUD for contraception and management of heavy menstrual bleeding. She has no other medical conditions and does not take other medications. She went to the ED for new onset shortness of breath and was diagnosed with a spontaneous pneumothorax (collapsed lung), which was ultimately discovered to be a catamenial pneumothorax.