Presentation: 37 yo F with progressive headache, R hand tingling, and incidentally found on this ER visit to be pregnant. Top 5 Teaching Points Cerebral Vein Thrombosis (1): 1) It’s rare: about 1:100,000 in a year (but about 11:100,000 in pregnant women) 2) Pt’s present with a progressively worsening localizing headache over days (as venous …