<prompt> A 6 year child presents with hepatosplenomegaly generalized lymphadenopathy along with fever. The child developed a rash, after being administered ampicillin. What could be the possible diagnosis?Infectious mononucleosisScarlet feverKawasaki diseaseHIV infection  <response>: Infectious mononucleosis: Aka glandular fever Etiological agents: Epstein-Barr virus EBV Mode of transmission: Blood transfusion, Direct contact CF: Fever, headache, sore throat, generalized lymphadenopathy, splenomegaly, hepatomegaly Patients with infectious mononucleosis treated with ampicillin or amoxicillin may experience Ampicillin rash which may occur with other b- lactam antibiotics. This morbilliform, vasculitis ampicillin rash is probably immune mediated and resolves without specific treatment. 