My husband is 80 yrs. old, and is being treated for liver cancer. He has very little conversation, even in company says he has nothing to say. Sleeps most of the day. He still drives, appears to be in trance like state. stays in his room except for meals. He can cook, dresses himself, but has become seedy looking. lets his beard grow scruffy & I asked him to shave says when we go out. Watches TV most of the time, he has had two to four bouts of urinary tract infection, after being treated for liver cancer. We play cards once a week, seems to understand, but can become forgetful. He is becoming forgetful. How do I have him tested to determine if he is in early stages of Alzheimer's?