Cause weakness symptoms and conditions

I see that of only 2 postings as of this one from me, one mentions feeling "generalized weakness and fatigue." BINGO! Me too. And...like the posting I'm referring to, the patient is taking it for Lyme Disease. I know that, itself, can also cause weakness and fatigue. But I too suspect the Doxycycline is contributing to this in my case.

I have had to use Prednisone off and on since the 80's for flamation of the lungs when I get a cold. I didn't use it too much, however, until this last year and can't seem to get off of it. I need to finalize reconstructive surgery and have to keep postponing it due to the fact, I can't seem to get off the drug. My surgeron will not operate while on it. He says I need to be off 4 to 6 weeks. I had been off two weeks, when I got sick again last week w/a fever, upset tummy and chest discomfort. My lower legs are also very weak, which they were back in Dec. when I was sick. My pulmonary doesn't know why the leg weakness, but everything I read says Prednisone can cause weakness. I have asthma also.