Black foot is seen in which poisoning?
(A) Arsenic (B) Lead (C) Mercury (D) Phosphorus
(A) Black foot disease is caused by arsenic poisoning since it causes thrombosis of vessels and may cause peripheral gangrene. Mnemonic Arsenic poisoning A - Anemia / Aldrich Mee's line / Arsenophagist (Tolerate upto 300mg ) R - Rain drop pigmentation / Reinsch test / Red velvety mucosa S - Sub endocardial hemorrhages / Sensory neuropathy E - Eruptions N - NAA I - Imbibition of arsenic ( Arsenic imbibed from surrounding soils after death ) / before treated iron oxide C - Cumulative poison / Cholera like symptom / Chelation for treatment