This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Forensic Medicine
Alopecia is commonly seen in poisoning by 
Select and explain. 
A. Copper, B. Mercury, C. Iodine, D. Thallium
D: Thallium
Answer: D: Thallium 
Explanation: Thallium may interfere with riboflavin homeostasis leading to dermatitis, alopecia, and neuropathy. Alopecia may also be seen in arsenic and lead poisoning Ref - Krishan Vij textbook of forensic medicine and toxicology 5e pg: 473