A 9-year-old girl is brought to the physician by her mother for a 3-day history of small red spots on her shoulders and chest. She has no past medical history apart from a viral infection a couple weeks ago. Hemoglobin is 14 g/dL. Prothrombin time is 12 seconds. Partial thromboplastin time is 34 seconds. Bleeding time is 9 minutes. Leukocytes are 8,000/μL. Glucose is 88 mg/dL fasting. Which of the following is most immunologically similar to this patient’s condition?
A) Arthus reaction
B) Graves disease
C) Malar rash
D) Rhus dermatitis
E) Urticaria
