• He Li, Jing Wen, Jian-Lin Zhou, Bo Chen, and Xian-Rong Wu.
• Departments of Emergency Medicine, Yulin First People's Hospital (The Sixth Affiliated Hospital of Guangxi Medical University), No.495, Education Middle Road, Yulin 537000, Guangxi Zhuang Autonomous Region, China.
• Am J Emerg Med. 2023 Jun 1; 68: 215.e3215.e7215.e3-215.e7.

AbstractThree days after being stung by wasps in a rural area, a 60-year-old man was admitted to the emergency department with headaches. The physical examination showed that the patient was conscious, had moderate pain, had four head and back stings with local edema and erythema around the wounds, and had a stiff neck. Brain computed tomography upon admission revealed no abnormalities. Following lumbar puncture, the patient was diagnosed with subarachnoid hemorrhage (SAH) induced by wasp stings. No obvious aneurysms were found by either computed tomography angiography or three-dimensional rotational angiography. He received symptomatic treatment including antiallergy medication (chlorpheniramine and intravenous hydrocortisone), nimodipine for possible vasospasm, fluid infusion, and mannitol for intracranial pressure reduction and was discharged on the 14th day. This case of wasp sting-induced SAH is being reported to improve doctors' diagnostic abilities when encountering patients with wasp stings. It is important for emergency physicians to be aware that patients stung by wasps may develop rare complications such as SAH. Hymenoptera-induced SAH is an example of such a case.Copyright © 2023 Elsevier Inc. All rights reserved.

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