title: Transient unilateral dilation of pupil associated with headache.
mesh_terms: D006261:Headache / Q000209:etiology*; D006801:Humans; D008881:Migraine Disorders / Q000150:complications; D009184:Mydriatics / Q000209:etiology*; D013566:Sympathomimetics / Q000009:adverse effects
chemical_list: D009184:Mydriatics; D013566:Sympathomimetics