Every month, there’s a stretch of days where I seriously just want to shank a b—ch. I have zero patience. I hate my reflection in the mirror. My boyfriend’s breathing feels like it’s attacking my brain. Then my period shows up, and I’m like, oh. Right. That was me…sort of.
A lot of people talk about PMS like it’s just a little womanly quirk. Medical sources describe something way more specific. Mayo Clinic lists PMS symptoms that include mood swings, irritability or anger, depression, anxiety, trouble sleeping, and fatigue. It also notes that serotonin, a brain chemical tied to mood, can fluctuate with hormonal shifts and contribute to symptoms.
That explains why it can feel like a personality swap. Your cycle doesn’t only live in your uterus. It can mess with sleep, appetite, focus, and how quickly you snap. The timing makes sense, too. Research reviews describe premenstrual symptoms showing up during the luteal phase, the days after ovulation, leading into your period, and fading shortly after bleeding starts. They also note how common at least one symptom is for premenopausal women.
For some people, the monthly change goes way beyond “cranky and bloated” and starts bulldozing relationships and daily life. That’s where PMDD enters the chat. Johns Hopkins Medicine calls PMDD a severe form of PMS and says symptoms can start during the week before menstruation and end within a few days after your period begins. It also points to a possible abnormal reaction to normal hormone changes and a serotonin connection.
Online, the most honest descriptions come as jokes. A This Morning reel has Dr. Zoe Williams saying PMDD can feel like your brain’s been “hijacked.” Another reel says “feeling like a different person every phase?” and shows a guy in the mirror considering a felony. Dark, dramatic, relatable.
So what do you do when you become a version of yourself you don’t even like? First, track it. Not for aesthetics, for strategy. If you know your worst days, you can stop scheduling big talks and giant social plans right in the middle of them.
Second, take it seriously when it’s severe. If you feel out of control, deeply depressed, or unsafe, that’s not “just hormones.” PMDD is treatable. A clinician can help you sort out what’s happening and what support actually works.
The post The PMS Personality Shift: Why You Become a Different Person for a Week appeared first on VICE.




