A previously healthy eight year old boy presented to the emergency depament with high grade fever, ahralgia, pruiritic erythematous rash and lymphadenopathy. He has completed 8 days out of a 10 day course of cefaclor for an upper respiratory tract infection. Which of the following is the most likely diagnosis?
Boy in the questions who developed the fever,rash,lymphadenopathy, after taking cefaclor for UI is suffering from drug induced serum sickness. Ref: Essentials of emergency medicine By Richard Aghababian page307; What to do About Allergies By Harvard Health Publications page 8.
Kawasaki Disease
Type III Hypersensitivity Reaction
Serum sickness Like Illness (SSLI)
Henoch schonlein purpura