Any ideas as to what could be wrong?

Hi all. My dad (62 yr old male) diagnosed 4/16 with GBM in left temporal lobe. Surgery at UCSF with full resection and then 6 weeks radiation and temodar at local hospital. Was also doing a very light cocktail mostly supplements and cannabis.

Extreme fatigue and bad nausea began around week 4 or 5 of treatment but was manageable. Finished treatment last Monday and has since been feeling worse each day.

On Saturday he became very confused, messing up words, not knowing peoples names. Sunday took 8mg dex as local oncologist thought it could be swelling. No improvement, up all night, Monday morning SEVERELY agitated. Went to local hospital and was admitted. At this point he was hallucinating and hearing things. They did an MRI and the analysis said:


Scattered small T2/flair bright foci are randomly scattered in the periventricular white matter, not significantly changed.

Abnormal signal in the left mesial temporal lobe and uncus. Suggest correlation for encephalitis possibly herpes orgin

Chronic ischemic small vessel white matter disease, not significantly changed.

They are now testing him for an infection? No one seems to really know whats going on and he is soooooo miserable, still very confused. I"m waiting to hear back from his doctor at UCSF but in the meantime I was just wondering if any of you guys have any idea what could be wrong??