Riggs Jack E.; Ketonen, Leena M.; Wymer, James P.; Barbano, Richard L.; Valanne, Leena K.; Bodensteiner, John B.Clinical Neuropharmacology: August 1994 Brief Report: PDF Only Abstract Summary: A 52-year-old man developed a severe anaphylactic reaction after a wasp sting. Slurred speech and left hemiparesis were noted a few hours later. Three-and-one-half weeks later, he became acutely obtunded and quadriparetic. Angiographic studies demonstrated complete and near-complete occlusions of the right and left internal carotid arteries, respectively. A mechanism is suggested for delayed ischemic stroke after wasp sting anaphylaxis that involves cerebrovascular sympathetic innervation. © Williams & Wilkins 1994. All Rights Reserved.