Hello, Welcome to HCM, The history and symptoms of your son are suggesting me that he may be having Vral Exanthematous disease.The majority of childhood exanthems are caused by viruses, and less often by bacteria. Most common conditions are infectious diseases of childhood which includes the viral infections like measles, chicken pox, German measles, and other viral infections that produce skin eruptions. Prompt recognition and diagnosis of exanthems is very important and examinations be performed to assess for systemic associations. Many a times identification of the exact infectious agent is not always practically possible. The prompt physical examination and history of the patient is very important in making the diagnosis. Don t wast time in diagnosis, treatment of the patient at the earliest is very important. Thank you.