Urticaria classification

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Classification

• Acute urticaria
• Chronic urticaria
• Drug-induced urticaria
• Physical urticarias are often categorized into the following.
  • Aquagenic: Reaction to water (rare)
  • Cholinergic: Reaction to body heat, such as when exercising or after a hot shower
  • Cold (Chronic cold urticaria): Reaction to cold, such as ice, cold air or water
  • Delayed Pressure: Reaction to standing for long periods, bra-straps, panty or thong bands, belts
  • Dermatographic: Reaction when skin is scratched (very common)
  • Heat: Reaction to hot food or objects (rare)
  • Solar: Reaction to direct sunlight (rare)
  • Vibration: Reaction to vibration (rare)
  • Adrenergic: Reaction to adrenaline / noradrenaline (extremely rare)