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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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A middle aged man presents with paraesthesia of hand and feet. Examination reveals presence of 'Mees' lines in the nails and rain drop pigmentation in the hands; The most likely causative toxin for the above mentioned symptoms is :
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The correct answer is  'Mees' lines in the nails and rain drop pigmentation of skin are characteristic of arsenic poisoning. Treatment of choice - freshly precipitated hydrated ferric chloride. Reference The Synopsis of FORENSIC MEDICINE and Toxicology 29th Edition