Last reviewed: November 2017
Last updated: November  2017

Summary

Differentials

Common

  • Acute spontaneous urticaria
  • Chronic spontaneous urticaria
  • Chronic inducible (physical) urticaria
  • Drug eruptions
  • Insect bite
  • Viral exanthem
  • Atopic dermatitis
  • Allergic contact dermatitis
  • Irritant contact dermatitis

Uncommon

  • Erythema multiforme
  • Stevens-Johnson syndrome
  • Auriculotemporal syndrome
  • Bullous pemphigoid
  • Mastocytosis
  • Urticarial vasculitis
  • Transfusion reactions
  • Serum sickness
  • Cold-induced urticaria, Muckle-Wells syndrome, neonatal multi-system inflammatory disease

Contributors

Authors VIEW ALL

Assistant Professor of Clinical Pediatrics, Clinician Educator

Director, Quality Improvement and Educational Activities For The Breathmobile Program

Keck School of Medicine, USC

Los Angeles

CA

Disclosures

ML was a speaker for MEDA Pharmaceuticals in 2016.

Clinical Associate Professor of Pediatrics

Division of Allergy-Immunology

Los Angeles County+USC Medical Center

Los Angeles

CA

Disclosures

KYCK has received grant support from and acts as a consultant and speaker for Thermo-Fisher Scientific.

Dr Marilyn Li and Dr Kenny Y.C. Kwong would like to gratefully acknowledge Dr Nanette Silverberg, and Dr Mary Lee-Wong, previous contributors to this topic. NS and MLW declare that they have no competing interests.

Peer reviewers VIEW ALL

Assistant Professor

Pediatrics and Internal Medicine

Division of Allergy and Immunology

UT Southwestern

TX

Disclosures

CP declares that he has no competing interests.

Assistant Professor

New York University School of Medicine

New York

NY

Disclosures

AK declares that he has no competing interests.

Professor

Head of Allergy Division

Department of Dermatology and Allergy

Hannover Medical School

Hannover

Germany

Disclosures

BW declares that she has no competing interests.

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