Dysmenorrhea, is passing through before or during the walking unbearable abdominal pain, lumbar acid, lower abdomen Zhuizhang or other discomfort, and even impact study, live or work.

• 痛经，是指行经前或行经期间出现难以忍受的腹痛、腰酸、下腹坠胀或其他不适，甚而影响学习、生活或工作。