This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Forensic Toxicology - Concepts, Statutes, Evidence, and Techniques, Subject name: Forensic Medicine
[{'content': 'Plumbism is caused by: (PGI June 2009) \nSelect and explain. \nA. Lead poisoning, B. Mercury poisoning, C. Thallium poisoning, D. Copper poisoning', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: A (Lead poisoning) Plumbism/Saturnism/Chronic Lead Poisoning: Short Review# Lead poisioning is nearly always of the chronic type.# Although chronic poisoning correctly describes prolonged exposure, manifestations often are acute.The main signs & symptoms are :Facial pallor Q -is one of the earliestQ & most consistent sign.Anaemia with punctuate basophiliaQLead line -Burtonian blue line Q (seen on only near dirty or carious teeth in upper jaw as an early sign Q.lt is due to epithelial deposits of sulphur granules) is seen on gums in 50-70% of cases# Colic & constipation QLead palsy & paralysisEncephalopathy QRenovascular manifestationsReproductive system manifestationsAlso knowSimilar blue lines are also seen in : Hg, Cu , Ag , Bi & Fe poisoning0', 'role': 'assistant'}]