This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2018, Subject name: Forensic Medicine
This specific sign is seen in: 
Select and explain. 
A. Lead poisoning, B. Organophosphorus poisoning, C. Arsenic poisoning, D. Zinc poisoning
C: Arsenic poisoning
Answer: C: Arsenic poisoning 
Explanation: Rain drop Pigmentation- Brownish pigmentation present on palm and trunk. It occurs in chronic Arsenic Poisoning. Chronic arsenic Poisoning- Skin- Rain drop pigmentation, Hyperkeratosis of palms and soles. Nails- Aldrich mees lines. Sensory neuropathy Black foot disease (Gangrene of peripheries) Tests done for diagnosis of Arsenic Poisoning- Marsh test Reinsch test NAA AAS