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First Aid & Emergencies

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Hives and Angioedema Treatment

Call 911 if the person has:

  • Difficulty breathing or wheezing
  • Tightness in the throat or a feeling that the airways are closing
  • Hoarseness or trouble speaking
  • Swollen lips, tongue, or throat
  • Nausea, abdominal pain, or vomiting
  • Fast heartbeat or pulse
  • Anxiety or dizziness
  • Loss of consciousness
  • Had severe reactions in the past

Symptoms of a severe allergic reaction (anaphylaxis) including:

If the person has an epinephrine injection kit available, do not hesitate to use the epinephrine auto-injector, even if those symptoms do not appear to be allergy related. Using the pen as a precaution is safe and could save their life

Recommended Related to First Aid

Electrical Shock

Read the Electrical Shock article > >


See Severe Allergic Reaction Treatment.

1. Avoid the Trigger

  • If you know what the trigger is, keep the person away from it.


2. Control Itching and Swelling

3. Follow Up

  • It may take several days for the trigger substance to leave the body. Continue treatment until symptoms subside.
  • If symptoms persist, or to help identify the allergen that caused the hives, see a doctor.

WebMD Medical Reference

Reviewed by Jennifer Robinson, MD on October 21, 2015

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