just wondering if he has ever had any problems with his heart. that was the first thing that came to mind when i read your comment. could be something more simple though. i would keep trying to find out what is wrong. i would get a second or even third opinon if needed. <positive_smiley>
my 67 year old husband has had exhaustion aches and congestion for over 2 months. doctors can't find anything. he has taken antibiotics been tested for pneumonia lots of blood tests. nothing has come up. he has felt better for a few days then it it returns. he has been on bipolar meds for over 10 years which have been effective and takes supplements. otherwise he has been very healthy. what could this be?