月经呈有规律性的、周期性的子宫内膜脱落、增生、分泌.近年来,月经周期与疾病的关系日益受到人们的重视.本文对其作一浅述,供基层人员参考. 一、月经期气胸是指月经期反复发作的气胸.其特点是:①气胸多发于30岁以上育龄妇女.②多于月经来潮48小时内发病.③妊娠或用排卵抑制药能终止其发 Menstruation was regular, periodic endometrial shedding, hyperplasia, secretion.In recent years, the relationship between menstrual cycle and disease is increasingly valued by people.This article makes a brief introduction for the grass-roots personnel reference. Pneumothorax refers to recurrent episodes of pneumothorax during menstruation.It is characterized by: ① pneumothorax multiple in women of childbearing age more than 30. ② more than menstrual cramps within 48 hours of onset ③ pregnancy or ovulation inhibitory drugs can terminate its hair