Feeling Oppressed Is Oppressive: PMDD and Discrimination
In this research study, women who perceived discrimination due to race, gender, age, weight, height, or other factors were more likely to have PMDD.
http://www.liebertonline.com/doi/abs/10.1089/jwh.2010.2456
I hadn't realized this was a cause of PMDD. The PMS Comfort article on causes discusses some of the more conventional theories on PMDD.
http://www.pmscomfort.com/pms-symptoms/pmdd-causes.aspx
I'd be curious if anyone knows more about this, or has experienced it. The research article linked above is quite recent, June 2011.