Contact urticaria refers to a wheal and flare reaction and or eczema following external contact with a substance usually appearing within 30 minutes and clearing completely within hours typically without residual signs cus may be produced by nonimmunologic irritant or immunologic allergic mechanisms. Admission for medical care is not routinely indicated for contact urticaria syndrome it is most important in cases of generalized urticaria if there is a concern for progression to anaphylaxis. Contact urticaria also called contact urticaria syndrome is an immediate but transient localized swelling and redness that occurs on the skin after direct contact with an offending substance 1 contact urticaria occurs within 10 to 60 minutes at the site of contact of the offending agent and completely resolves within 24 hours 2. Contact urticaria is an immediate but transient localized swelling and redness that occurs on the skin after direct contact with an offending substance
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