Do You Think Donating My Plasma Caused Me To Itch More?

I know consistently doing so dehydrated me and lowers my blood pressure, and I believe my spontaneous itching to triggers that usually don't do anything or less now is worse. Even with anti histamine pills, drinking more water, and using menthol doesn't seem to calm my skin and nerves down if I get exposed to them. I sadly can't remove them because of the environment I'm currently in (as in, I still live with my parents).