I have itp and now graves disease, endo wants me to undergo radioactive iodine treatment, how will this affect my itp?

Unusual combo: This is an unusual combination of autoimmune diseases. There is little in the literature for guidance, but a few case reports indicate that the ITP may get better with treatment of the Graves with methimazole. Although I cannot think of any way that RAI should affect your ITP, RAI can sometimes activate the immune system and worsen Graves eye disease.