My father recently experienced regrowth after 7 yrs of clean MRI's. His first tumor was an astrocytoma but on regrowth he now has a GBM. he had surgery 2 wks ago to remove the tumor which was succesful but there is definately still malignant cells present in his brain. As of Mon of this past week he has been completly off decadron. My question is, has anyone experianced increases irratability after finishing steroids? While he was on them, my dad was somewhat snippy, but now he is getting angry and lashing out over small things. I was wondering if others had experienced this ....