Contact urticaria (CU) is defined as an immediate wheal‐and‐flare skin reaction following direct contact with a protein or chemical agent1,2. CU has been described in association with numerous chemicals, including preservatives, antiseptics, fragrances and medicaments3‐6. CU syndrome ranges from localised urticaria (stage 1) to anaphylactoid reactions with shock (stage 4)7.
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