Quoted:
PMS and PMDD can be very very real for some women.
Some women really struggle with this.
Others, do treat it as an excuse to act rudely.
Avoid the women who are in that second group.
Be as compassionate as you can to the women in the first group....having your hormones out of whack is really not fun.
This... is nothing but pure truth.
My wife suffered from PMDD...It was NOT FUN. And it wasn't because she would become a "bitch." It was because she would be OK one minute, the next minute feeling rather numb, the next minute crying her eyes out, then happy for a second, then repeat in no particular order. She would cry herself to sleep for absolutely zero reason at all. She didn't really take it out on me. The most common forms of backlash would be if I happened to be a convenient outlet for frustration, other times she would get edgy and saying something as simple as "what are we doing for dinner" could easily lead to a massive blow up/irrational argument. It didn't take long for me to learn the best way to deal with it (outlined below)
And for anyone that wants to say that hormones don't have any effect... please explain why the problems stopped when she stopped taking the pill? (hint - the pill is nothing but a hormone)
And here's my advice for guys that may find themselves in a serious relationship with a woman with these issues:
The best way to deal with this is to learn to recognize it when it strikes. Don't let it turn into an argument, because that will just spiral down into an uncontrollable clusterfuck that will make both of you feel worse... especially her. Once you realize what's going on, stop, take a breath, count to ten, whatever, then say something like "look, I understand what's going on. Let's just calm down and revisit this later." A reasonable women will understand and this will help both of you immensely. She cant' explain what's going on to all the people she deals with throughout the day, so in the interest of not getting fired/arrested/banned from a particular store for life she's likely managed to store it up until she gets home. Once she's in a comfortable environment she's going to let it all out. If you are the guy she trusts, help her by understanding the situation and letting her do a controlled vent. DO NOT ARGUE WITH HER THIS IS LIKE THROWING A TRUCK FULL OF IMR INTO A VOLCANO. I learned all of this the hard way, and unfortunately one of the big stumbling blocks was that she thought that guys could never understand what was going on. It took a little while for me to figure out that if we were going to spend forever together we would have to work through this, then a little while for her to figure out that it was possible for me to "get it through my male brain" as she would put it.
If you can't help her, or your attempts make her more combative... EJECT. Completely different forces at play in this scenario.