i am simply a diabetic here to answer questions on diabetes. This question is entirely out of my league. i would recommend doing a search and reading up on the drug on the internet.
This sounds like Lupus. In fact, it sounds EXACTLY like Lupus, which is another autoimmune disease. The butterfly rash is characteristic of this disease. So is hair loss and dry, flaky skin. I would contact a doctor ASAP and get this checked out.
Yes I have also heard & read the most common characteristic of Lupus is the butterfly rash. Please get checked out!