Non-immunological urticaria

external

• Causes

  • Cold weather
  • Heat
  • Emotional stress
  • Dermatographism
  • Aspirin
  • Angiotensin converting enzyme inhibitor
  • Opiate-receptor agonist
  • Urticaria pigmentosa

• Parents

  • Urticaria

• Description

  • "Mechanism: -Physical stimuli causing mast cell release. -Direct mast cell releasing drugs."