TY - JOUR T1 - Intracranial hypotension: an unusual cause of headache in the emergency department JF - Emergency Medicine Journal JO - Emerg Med J SP - 257 LP - 258 DO - 10.1136/emj.2009.079186 VL - 28 IS - 3 AU - Y-M Weng AU - T-C Weng AU - W-J Lee AU - H-J Lin Y1 - 2011/03/01 UR - http://emj.bmj.com/content/28/3/257.abstract N2 - A 30-year-old man presented to our emergency department because of severe headache. He had neck stiffness and posterior fossa headache for 2 months. His headache worsened on upright position and improved on recumbent position. He denied any experience of head trauma, fever or any medical procedure in recent months. He maintained follow-up at a neurological outpatient department for control of high blood pressure and pain. Before arrival at the emergency … ER -