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 :
A. Lead
B. Arsenic
C. Thallium
D. Mercury
Correct answer : B. Arsenic
‘Mees’ lines in the nails and rain drop pigmentation of skin are characteristic of arsenic poisoning. Treatment of choice – freshly precipitated hydrated ferric chloride.