Anaphylaxisis a sudden and severe allergic reaction that involves more than one body system.
Learn how to identify an anaphylactic reaction so it’s possible for you to seek immediate medical care.
Frequent Symptoms
Anaphylaxis is primarily an allergic reaction.
Illustration by Verywell
Anaphylaxis comes on suddenly and the symptoms progress quickly.
It will develop most commonly after eating, getting stung by an insect, or taking medications.
For instance, those with allergies tobee stingswill usually know they’ve been stung.
This is why someone may be admitted to the hospital for observation after an anaphylactic reaction.
However, this puts them at risk for a biphasic reaction, which can lead to severe consequences.
A study of pediatric cases published in 2015 found a higher incidence in children of age 6 to 9.
Protracted anaphylaxis is seen rarely.
In this case, the symptoms can last from several days to over a week without clearly resolving completely.
Complications
Anaphylaxis can result in death if not treated.
In older patients, some research suggests it is safer to administer intramuscular injections rather than intravenous epinephrine.
It is appropriate to call 911 for emergency treatment.
Don’t wait to summon emergency care.
The reaction can progress rapidly.
Hives can turn into anaphylactic shock in minutes.
If you are alone, you risk becoming unconscious before you’re able to call for care.
Even if you use an epinephrine self-injector, you will need emergency treatment.
Frequently Asked Questions
Anaphylaxis is triggered by an allergen.
Foods like nuts, fish, shellfish, and milk are allergens commonly linked to anaphylaxis in children.
Anaphylaxis usually occurs between five to 30 minutes after coming into contact with an allergen.
This is a critical condition brought on by a sudden drop of blood flow throughout the body.
Anaphylaxis can also cause suffocation due to severe swelling of the throat.
If left untreated, anaphylaxis can cause death within minutes to hours.
In severe cases, recovery may take several days.
If not treated appropriately, anaphylaxis can cause permanent heart, brain, lung, and kidney injury.
Anallergistcan advise you if you need one.
American Academy of Allergy, Asthma & Immunology.Anaphylaxis.
2015;115(3):217-223.e2.
2014;1(4):228-233. doi:10.1002/ams2.48
