This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
4 people in a family comes to you with burning sensation over the extremities. Some of them have also got vomiting, diarrhea. The pupils are dilated and occasional twisting of the muscles are present. What is the MOST likely cause of the symptoms? 
Select and explain. 
A. Organophosphate poisoning, B. Carbamate poisoning, C. Ergot poisoning, D. Abrus precatorius poisoning
C: Ergot poisoning
Answer: C: Ergot poisoning 
Explanation: This is a case of ergot poisoning usually as a result of eating contaminated rye bread. The burning sensation described is also called St. Anthony's fire. Due to the effect of the alkaloids ergotoxine, ergotamine, ergometrine and about 30 alkaloids present in the fungi, all the symptoms described in the question may be present. Ref: Textbook of Forensic Medicine and Toxicology by Narayan Reddy, Edition 21, Page - 479