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What is Peripheral neuritis with characteristic ‘wrist drop’ or 'foot drop' is seen in: and explain in detail?
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