Urticarial vasculitis

• Persistent urticaria
• Associated with autoimmune connective tissue diseases
• Can be due to hypocomplementemia (deficiency of complement factors)
  • In which case there is also systemic involvement
• Clinical features
  • Recurrent episodes of painful, persistent urticarial lesions that last > 24 hours
  • Angioedema can occur
• Treatment
  • Antihistamines
  • Steroids
  • NSAIDs
  • Dapsone