Chronic urticaria

Background

• Recurrent urticaria at least twice per week for 6 weeks
• Often autoimmune etiology

Clinical Features

• Urticaria

Evaluation

• Rule out anaphylaxis
• Identify any causative agents

Management

• H1/H2 blockers
  • Diphenhydramine
  • Famotidine
• 2nd line agents
  • Doxepin
  • Mirtazapine

Disposition

• Discharge if no concern for anaphylaxis

See Also

• Urticaria