Reason For Severe Dizziness And Headache?

Hi, My question is my husband has had a deep brain scan yesterday and they found a 5mm (something) in the basal ganglia area of his brain. We went to the drs after a week of severe dizzyness, then headaches arrived 5 days later, naseau, tinnitus and ear pressure, pressure behind the eyes and fingers that tingle and or go numb. He has been on medication for the headaches but nothing touches him and he is not very steady on his feet. He describes his spinning episodes as a really drunk moment and you can see in his eyes something isn't right. So just looking for a maybe possiblity of what a diagnosis is going to be.