Is the efficacy and dose same for subcutaneous vs intravenous IVIGs being used for dermatomyositis?

Thank you for the very interesting question:

When considering the best answer, there is a bit of background I think is important to keep in mind. (I'll put my final thoughts about dosing at the end of this background)

• First and foremost, although IVIG has been used as a de facto treatment for multipl...