PMS - is it just a normal part of life or a condition?

I read the article about PMS and most women have it - including me. Mine seems to be a bit more serious. PMDD (Premenstrual Dysphoric Disorder) - which is the mental health part - is right at home. Anxiety, depression etc. always occur.

But the truth is that I have never met a woman without PMS.

My question is: what do you think? is PMS a condition or a normal problem? When DO you think it is serious?
PMS - is it just a normal part of life or a condition?
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