In this episode, Dr. Roy Baskind and Dr. Ahmit Shah answer such questions as: when is an opening pressure on LP required? When should we pull the trigger on ordering a CT venogram in the patient with unexplained headache? Which older patients who present with headache require an ESR/CRP? How do the presentations of cerebral venous thrombosis (CVT) and idiopathic intracranial hypertension (IIH) compare and contrast? When is it safe to start steroids in the ED for patients suspected of giant cell arteritis (GCA); will starting steroids affect the accuracy of a temporal artery biopsy? How soon should patients suspected of GCA get a temporal artery biopsy? When should we consider posterior reversible encephalopathy syndrome (PRES) and pituitary apoplexy in the peripartum patient? How should we think about the differential diagnosis of vascular headaches? and many more...