<prompt> Nausea, Vomiting, Blue line on gums, Wrist foot drops, Pallor, Colic are manifestations of poisoning due toMercuryArsenicOrganic leadInorganic lead  <response>: Ans. d Inorganic leadRef: K. Park 23rd ed. 807-808 Insomnia is caused by organic lead poisoning. Organic lead poisoning causes CNS side effects while Inorganic lead poisoning causes non-CNS side effects.Due to Organic Lead CNS effectsDue to Inorganic Lead Non-CNS effects Insomnia Mental confusion Headache Delirium Facial pallor: earliest and most consistent sign. Anemia: Microcytic Hypochromic RBCs stippling Burtonian Line on upper gums Lead Colic: constipation or copper Lead Palsy wrist foot drop 