UMEM Educational Pearls

Category: Vascular

Title: Subarachnoid hemorrhage

Keywords: subarachnoid hemorrhage (PubMed Search)

Posted: 12/10/2007 by Rob Rogers, MD (Updated: 12/7/2019)
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Subarachnoid hemorrhage: Unilateral or bilateral headache?

Pretty good evidence exists that most patients with subarachnoid hemorrhage will have a bilateral headache.

In fact, unilateral headache is helpful in the history in ruling out SAH in most cases. Presence of an unruptured aneurysm, however can be present with a unilateral headache.

J NeuroSurg 2006