<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 12-year-old boy is brought to the physician because of fever, malaise, and a painful, itchy rash on the right shoulder for 2 weeks. The patients mother says the boys condition has worsened over the past 4 days. He has a history of atopic dermatitis. He has lived with his mother at several public shelters since she separated from his physically abusive father 2 months ago. His immunizations are up-to-date. There is cervical lymphadenopathy. Laboratory studies show no abnormalities. A photograph of the rash is shown. Which of the following is the most likely diagnosis?? A: Bed bug bites, B: Nonbullous impetigo, C: Stevens-Johnson syndrome, D: Eczema herpeticum, E: Shingles,  <response>: This is a clinical case question involving a 12-year-old boy with fever, malaise, and a painful, itchy rash on the right shoulder for 2 weeks that has worsened over the past 4 days. He has a history of atopic dermatitis and his immunizations are up-to-date. He has cervical lymphadenopathy but normal labs. The key findings are the localized rash in a patient with a history of atopic dermatitis that has worsened, along with lymphadenopathy, which point towards an infectious process. Eczema herpeticum is herpes simplex virus infection in a patient with atopic dermatitis, which fits this presentation. Bed bug bites would be more diffuse and bilateral. Nonbullous impetigo is possible but less likely given the localized rash and negative labs. Stevens-Johnson syndrome is a severe mucocutaneous reaction that does not fit with the localized rash. Shingles is unlikely in a 12 year old with a unilateral rash.D: Eczema herpeticum 