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 (Auvi-Q or Epi Pen) 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 his or her life.
Severe Allergic Reaction Treatment.
1. Avoid the Trigger
Hives and angioedema that happen suddenly are usually triggered by an allergic reaction to a food, drug, or insect bite or sting. If you know what the trigger is, keep the person away from it.
2. Control Itching and Swelling
Give an adult an over-the-counter
antihistamine. Check with a doctor before giving an antihistamine to a child. Put a cool compress on the area or have the person take a cool shower.
Avoid strong soaps, detergents, and other chemicals that can make
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.