Wendy,
The last week of radiation and the following two weeks were very depressing for me. Treatment was finished and I was feeling as though I would never get better. I started climbing out of it about 2.5 weeks post radiation and it improved from then on.

It is a difficult time. You think you should be getting better and you're not. You are also no longer tethered daily to you doctors and the built-in patient support group at the treatment center. He should start to improve soon. Was he doing well mentally during treatment?
Regards,
Rob J