• Takayuki Endo, Shunsuke Amagasa, Masahiro Kashiura, Yuki Kubota, and Takashi Moriya.
• Department of Pharmacy, Saitama Medical Center, Jichi Medical University, 1-847 Amanuma-cho, Saitama-shi, Saitama 330-8503, Japan. Electronic address: endu.com@jichi.ac.jp.
• Am J Emerg Med. 2021 Dec 1; 50: 811.e1-811.e2.

AbstractA cholinergic crisiss is a state characterized by excess acetylcholine owing to the ingestion of cholinesterase inhibitors or cholinergic agonists. We report the first case of a cholinergic crisis after the ingestion of a carpronium chloride solution, a topical solution used to treat alopecia, seborrhea sicca, and vitiligo. An 81-year-old woman with no prior medical history was transported to our emergency department because the patient had disturbance of consciousness after ingesting three bottles of FUROZIN® solution (90 mL, 4500 mg as carpronium chloride). A family member who found the patient called for emergency medical services (EMS) personnel, who contacted the patient ten minutes after ingestion. The patient's Glasgow Coma Scale score was 12 (E4V3M5), and vital signs were as follows: blood pressure, 80/40 mmHg; heart rate, 40 beats/min. The patient vomited repeatedly in the ambulance. On arrival to the ED, the patient's systolic blood pressure and heart rate temporarily decreased to 80 mmHg and 40 beats/min, respectively. Seventy-eight minutes after ingestion, gastric lavage was performed. The patient's symptoms, which included excess salivation, sweating, and hot flush, improved 24 h after ingestion, and the patient's vital signs stabilized without atropine or vasopressors. On the second day of admission, the patient was examined by a psychiatrist and discharged without suicidal ideation. Carpronium chloride has a chemical structure similar to that of acetylcholine; therefore, it exhibits both cholinergic and local vasodilatory activities. There is limited information on the pharmacokinetics of ingested carpronium chloride; therefore, physicians should be made aware that ingesting a carpronium chloride solution may cause a cholinergic crisis.Copyright © 2021 Elsevier Inc. All rights reserved.

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