TY - CHAP M1 - Book, Section TI - Botulism A1 - Williams, Saralyn R. A1 - Thurman, R. Jason A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason PY - 2021 T2 - The Atlas of Emergency Medicine, 5e AB - Botulinum is a potent neurotoxin that is derived primarily from Clostridium botulinum. Botulinum toxin blocks release of acetylcholine, which results in decreased activation of muscarinic and nicotinic receptors. Initial effects may include nonspecific findings such as nausea and vomiting, constipation, and throat complaints. The classic neurologic findings are due to the lack of receptor activation of the nicotinic receptor at the neuromuscular junction. Dysarthria, dysphagia, diplopia, and mydriasis progress to a descending symmetric paralysis. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2023/03/23 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181056911 ER -