A boy aged 7 years recently diagnosed with cellulitis presented with left ankle and right knee pain and swelling, with a tender, nonerythematous subcutaneous nodule above the right olecranon. Four days after discharge, he developed new painful skin lesions on his elbows, forearms, and legs. What is your diagnosis?
This cohort study uses electronic health records across 3 diverse pediatric health care networks to characterize the incidence, recognition, and distinguishing clinical features of pediatric C difficile infection–associated reactive arthritis among children with C difficile infection.
This cohort study assesses the accuracy and negative predictive value of a graded oral provocation challenge among children with suspected allergy to amoxicillin.
This Viewpoint describes the epidemiology, clinical manifestations, prevention, and diagnosis of Zika virus.
Guandalini and Assiri review how celiac disease is triggered by the ingestion of gluten in genetically predisposed individuals. Diagnosis requires an intestinal biopsy, and a strict gluten-free diet must be followed.