The evaluation of urticaria begins with a history and physical exam.

Physical findings in someone with urticaria may include:

• Rash:
• Pink, slightly raised patches
• Hives or welts

Examples of urticaria:

• Rashes in children
• Rashes in adults

Physical findings in someone with severe urticaria may include:

• Low blood pressure
• Low blood oxygen levels on pulse oximetry
• Rapid pulse
• Facial swelling
• Mouth or tongue swelling
• Wheezing

Tests that may be used to evaluate urticaria include:

• Antibody levels
• Allergy skin tests

For more information:

• Allergic reaction evaluation