How would you attempt to determine the etiology of intracranial hemorrhage in a patient with newly diagnosed lupus and an active viral infection?  

My typical evaluation of a case like this is as follows: 1. Evaluate their lupus disease activity: CBC, CMP, ESR, CRP, C3, C4, dsDNA, urinalysis, urine protein/creatinine ratio (latter two are more for eval of renal disease) 2. Evaluate the cause of ICH: a. MR to further evaluate for other non-I...