Hi Angie,
All I can share is our experience. Timothy's grandma has been splenectomised for 46 years and about two years ago received Rituxan for her Chronic ITP. She has had no problems with it and is in remission. Not everyone goes into remission through rituxan, but it can happen. She also used steroids her whole life, and so far does not seem to have long term negative affects. There are side effects and bone loss issues if you take it every day for a long time, but short burst to bring up counts is not the same thing. I personally don't like steroids, if we can avoid them, but we've used them alot. Tim has some significant tooth decay, and i think its from the steroids. We have not tried danazol. The hemonc skipped right over that one. We go on the Imuran/Cyclosporin/Cellcept next. We also actually have three family members with Chronic ITP. Rare, and funny that they say its not hereditary. I'm surprised we haven't been approached for a study.
As far as autoimmune diseases, I have hypothyroidism caused by autoimmune disease (hoshimoto's thyroiditis). That's all for me. Tim's dad has type 1 diabetes that he aquired at age 29, which is very, very rare. He is insulin dependent. This was more than likely caused by an autoimmune distruction of his pancreas. Tim's dad's family also has Lupus in the family. My mom is also hypothyroid. Oh, and my other son has Multiple Sclerosis-also an autoimmune disease.
I hope you find the treatment you need. What are your counts like? Are you refractory to treatments? Oh, one other thing. My personal opinion is that Tim's grandma responded so well to the Rituxan partly because of her splenectomy. She only had one infusion and responded immediately. Tim's uncle (professor of hematology at eastern carolina) agrees this may be the case. In fact the hemonc says that being splenectomised sometimes makes refractory itp more treatable, if its not curative.
Hope that helps.