anxiety
"I have been diagnosed at 54 years of age with ADHD and have always had anxiety coupled with depression.  

I had been prescribed Effexor with drastic results leading to unbearable back pain and incontinence of the bowels. Tried Cymbalta with zero results. I have just been switched to Wellbutrin 150mg XL.  I take 25-50mg seroquel for sleep.  My greatest fear is muscle and back pain because I work in the health care industry and have to be physically capable of working.  

Has anyone out there experienced chronic back pain on these medications.  I don't doubt the the anxiety of the potential of experiencing back and muscle pain is actually contributing to more anxiety."