lupus

A 23-year-old female presents to the ED with slurred speech, left lower leg weakness, and confusion. A friend is with her and states that the patient does not take any medications, has no past medical history, but has been complaining of various symptoms over the past year.
On exam, the patient has 0/5 strength in her left lower extremity, has slurred speech, and is unable to answer most of your questions. You code stroke the patient. CT head/CTA head and neck are unremarkable, but MRI brain reveals stroke.