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You are seeing a 2 year old boy with complaint of penile pain for 2 days. He is previously healthy, fully immunized, afebrile, and has not had this before. He has been able to urinate although he complains of pain with urination. There is no history of trauma to the area. He is uncircumcised. Exam shows the tip of the foreskin to be swollen and erythematous and tender to the touch. There is no discharge, evidence of trauma, discoloration of the penile shaft or perineum, nor inguinal lymphadenopathy. The testes are descended and nontender.