I don't have PMDD but I can relate to the constant shock at seeing on paper the seriousness of my diagnosis. When I have been discharged from hospital I read the report and am always amazed at how unwell it makes me sound. Not like it was news to me as I was in a psych ward but for some reason I am always shocked.
On a side note my symptoms used to worsen significantly around my period every month until I started taking Lithium and now I hardly even know I am due as I feel fine.