This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'A 5–month old formula fed infant has been brought with complaints of watery diarrhoea of 2 days duration and irritability of one day duration.He had been receiving WHO ORS at home. Physical examination reveals a markedly irritable child with a rather doughy skin and rapid pulse.The most likely diagnosis is – \nSelect and explain. \nA. Meningitis, B. Encephalitis, C. Hyponatremic dehydration, D. Hypernatremic dehydration', 'role': 'user'}, {'content': 'Answer: D \nExplanation: This child has ---> i)\xa0\xa0\xa0\xa0\xa0\xa0 Irritability\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0 ii) Doughy skin\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0 iii) History of ORS taken at home\nIrritability and doughy skin is seen in hypernatremic dehydration.\nHypematremic dehydration occurs when fluid is given with more salts.\nThis child must have taken more ORS than fluid i.e., concentrated ORS.\nAbout hyponatremic dehydration\n\n❑\xa0There is drowsiness (not irritability)\n❑\xa0Skin is dry inelastic (not doughy).', 'role': 'assistant'}]