Imuran is an immunosuppressant, so it is keeping your overactive auto-immune system in check, thus keeping your Lupus quiet. Of course, this also means that the immune system is not strong enough to battle with the wart growth you are experiencing.
Is the "Dr at the hospital" just a random Dr from the emergency room, or do you have a rheumatologist that has been prescribing the Imuran and treating your Lupus? I would have a chat with whoever has been prescribing the Imuran.
I would think that a series of blood tests to check your inflammation markers, etc, would give a rheumy guidance as to whether to stop the Imuran or not. It may be something you could stop for a while just to see if the Lupus becomes more active and if the warts stop proliferating.
Good luck, let us know what you decide!
Lynnwood, Lupus & Sjogren's Moderator, Dx: 2000DIAGNOSING LUPUS & HW's LUPUS 101
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