Chronic arsenic poisoning is much more insidious in nature, often involving multiple hospital
admissions before the correct diagnosis is made. Arsenical dermatosis was rarely picked up from the variety
of so many dermatosis. The source of arsenic exposure is discovered in fewer than 50% of cases. The most
prominent chronic manifestations involve the skin, lungs, liver and blood systems. This was first diagnosed in
West Bengal and Bangladesh patient of Khulna in December, 1984113, 114 by Prof. K. C. Saha in July 1982
at School of Tropical Medicine, Calcutta