My father-in law (87) seems to be overwhelmed easily these days, seems unable to focus on simple tasks and is more frequently absentminded and forgetful. However he can still follow and participate in fairly complex discussions about politics and economics. He is nearly completely deaf but can lip read. He is unsteady on his feet and small tasks like making toast seem almost too much for him. All of the children have been taking turns being at the house since his wife died a month ago. He wants to continue to live independently and drive but we don't know what to make of this foggy behavior. I must also mention that I noticed it last winter, well before his wife became ill. We really are at a loss as to how to begin to evaluate the situation.