Short-Lasting Unilateral Neuralgiform Headache With Autonomic Symptoms Syndrome as the Initial Manifestation of Idiopathic Hypertrophic Cranial Pachymeningitis

This is the first report of 2 patients presenting with short‐lasting unilateral neuralgiform headache with autonomic symptoms as the initial manifestation of idiopathic hypertrophic cranial pachymeningitis. They both had acute retro‐orbital pain ipsilateral to the dural thickening on magnetic resonance imaging of brain, and one had transient miosis as an additional parasympathetic feature. Short‐lasting unilateral neuralgiform headache with...