Thank you for the replies.
I have been on Imuran for approximately two years without any notable side effects and/or complications.
I became interested in the unknown side effects after a few people approached me with concern about the drug. After much investigation on the drug I found that the "rare" side effects are identical to the symtoms of anxiety and panic attacks.
The psychological side effects of Imuran to my knowledge and after speaking to many in the pharmacetical business has never been formally investigated since statistically the side effects are so rare plus trying to distinguish if the anxiety or panic attacks are in fact related to the drug or another physiological disorder. Trying to correlate pyschological side effects of a medication especially when used in conjunction with a drug that has known psychological side effects, i.e. Predisone is quite a complicated process.
I do hope that perhaps research will be conducted on this subject not only for the drug in question but also for other drugs in safe and effective management of all known side effects regardless if they are statistically unlikely.