Recent research shows that trauma and PTSD can cause severe premenstrual syndrome.
If you have really bad PMS (premenstrual syndrome) you may actually have posttraumatic stress disorder (PTSD).
Women with PTSD are 7x more likely to have a severe form of PMS called Premenstrual Dysphoric Disorder that leads to depression, hopelessness, anxiety, tension, extreme mood swings and irritability. This probably happens because trauma and PTSD cause the almond-sized emotional center of your brain – the amygdala – to become hyperactive and that is the same part of your brain that gets overactive in PMS. So if you have super-PMS there is real hope, fully resolving your PTSD may also resolve your super-PMS.
Pilver, C. E., et al. (2011). “Posttraumatic stress disorder and trauma characteristics are correlates of premenstrual dysphoric disorder.” Arch Womens Ment Health 14(5): 383-393.