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What is A child presents with history of high fever for 4 days along with seizures. A rash develops on trunk on the day after the fever subsides. What is the most probable diagnosis? and explain in detail?
History of high fever & rash appearing as the fever subsides is suggestive of Roseola infantum. -Roseola infantum/sixth disease/exanthema subitum * Caused by herpes virus (HHV6A and 6B) * Clinical features: Sudden onset of high fever Rash appear when the fever subsides Nagayama spots are seen * Lab findings in Roseola infantum Relative Lymphocytosis Leukopenia