Arthus Reaction

A 6-year-old boy presented to the emergency department (ED) with fever and skin rash (Figure  1) over his left thigh. He had just received a combination vaccine with diphtheria, tetanus, pertussis, and poliomyelitis (DTaP-IPV) on his left thigh 12 h prior to his visit to the ED. His vital signs were body temperature of 36.6°C, respiratory rate of 20 breaths/min, blood pressure of 104/83  mm Hg, and heart rate of 100 beats/min. The results of laboratory examinations showed a white blood cell count of 11,500/μL, with neutrophils and eosinophils of 61.9% (reference value 45–70%) and 6.6% (reference value 0–4%), respectively, and a C-reactive protein level of 9.1 mg/L.
Source: The Journal of Emergency Medicine - Category: Emergency Medicine Authors: Tags: Visual Diagnosis in Emergency Medicine Source Type: research