The menstrual period is not a cakewalk for most women. The lining of the uterus, which is thickened during the previous month, is expelled and causes painful bleeding. That awkward moment during which hormone levels fall and rise, can affect the whole body in different ways. While most women experience menstrual pain in the abdomen, swollen breasts, headaches and acne returns, here are some symptoms and information that you may not know. Menstrual pain can affect the brain a study of 52 women in 2014, and cited by the US site Bustle, indicates that the pain caused by the rules may reduce cognitive performance, attention, ability to multitask at a time, and even the capacity of normal judgment. Conclusions that prove how the menstrual cycle affects not only the body but also the brain. The perception of pain several studies have shown that there is a difference between the way men and women experience pain. According to the researchers, these are the hormones that are responsible. Estrogen levels can alter the perception of pain a woman, and can vary throughout the life cycle, as well as menopause. This link between estrogen and pain is not entirely clear to scientists, the site adds Bustle, but the results of the work done to date suggests that regular menstrual pain can go up to change the perception of pain in general, not just during menstruation.