Which vitamin deficiency causes megaloblastic anaemia with neurological symptoms such as subacute combined degeneration?
Answer and explanation
Correct answer: C. Vitamin B12
- Step 1: B12 deficiency affects the dorsal columns and corticospinal tracts.
- Step 2: Treatment is intramuscular hydroxocobalamin.
Answer
Vitamin B12.
Why not the others: 'Vitamin B6' causes peripheral neuropathy and sideroblastic anaemia; 'Vitamin C' causes scurvy; 'Vitamin K' causes bleeding.
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