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: Pathology
Peripheral neuritis with characteristic ‘wrist drop’ or 'foot drop' is seen in: 
Select and explain. 
A. Lead poisoning, B. Mercury poisoning, C. Copper poisoning, D. Bismuth poisoning
A: Lead poisoning
Answer: A: Lead poisoning 
Explanation: Lead intoxication is manifested by serious gastrointestinal disturbances which include nausea, vomiting, colic, and constipation. A peripheral neuritis also develops which may produce the characteristic wrist-drop or foot-drop. 
Ref: Shafer's textbook of oral pathology 7th edition page 558