1. Teaching NeuroImages Neurology Resident and Fellow Section © 2013 American Academy of Neurology A dangerous case of orthostatic headache

2. 43 yo man with non-traumatic orthostatic headache, spatial disorientation and visual hallucinations (“colored flames”). General and neurological examination were normal. Tana et. al. Vignette © 2013 American Academy of Neurology

3. Tana et. al. Imaging © 2013 American Academy of Neurology

4. A dangerous complication of spontaneous intracranial hypotension Patient underwent drainage of the largest hematoma with benefit. Though initially planned, epidural blood patch and surgical treatment of the radicular cyst were not performed because clinical and radiological findings improved with hematoma drainage, bed rest and hydration. After three months, the patient underwent follow-up with MRI that documented complete resolution of the subdural collection and dimensional stability of the radicular cyst. SIH is often considered benign and treated conservatively [1], but can rarely manifest with serious complications requiring rapid surgical evaluation [2]. Tana et. al. © 2013 American Academy of Neurology