What are the indications for lumbar puncture in patients with acute headache?
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Acute headaches warrant further evaluation with lumbar puncture if there is suspicion for infectious meningitis or encephalitis, subarachnoid hemorrhage (SAH), or idiopathic intracranial hypertension (pseudotumor cerebri) (SOR: C, expert consensus opinion).
Evidence-based practice 16, no. 02 (2013): 10-11