I think long term illness DOES cause anxiety. My mom was diagnosed last May with cancer, on top of that she had diabetes, kidney failure and congestive heart failure. She was on Xanax and took it each day, on top of Norco (sp?) for pain but realized that together it helped her more since the Norco made her sleepy, it helped her relax more and the doc said if it worked with no side effects to let her do it. She has since passed but I think just the stress of your health issues will cause you anxiety. That is why there is a doc that I used to work with that taught Mindfulness Based Stress Reduction, and it helps with people with illnesses, anxiety, etc. She was doing it to research if stress reduction would help prevent premature birth I think, but it really does help in general. Might wanna try that out too!