Mortureux P; Léauté-Labrèze C; Legrain-Lifermann V; Lamireau T; Sarlangue J; Taïeb A OBJECTIVES: To establish the clinical, etiological, and prognostic features of acute urticaria in infancy ...

Allergic reactions in babies and infants can range from mild to severe or even life-threatening. Emergency symptoms of anaphylaxis (a severe allergic reaction) can develop within minutes.