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 :
'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
Lead
Arsenic
Thallium
Mercury
Miscellaneous