What it is
It is when the body reacts too strongly to something that is normally not dangerous (some allergens include peanuts, pollen, cats, eggs, etc.). It can cause symptoms such as sneezing, itchy skin, or a runny nose.
What you can do at home
What to do
- If your child’s allergies are already being treated by a healthcare professional, follow their advice.
- Keep an eye on their symptoms, especially during the first 2 hours after they are exposed to the allergen.
- If there are no contraindications, you can give them allergy medication (such as Benadryl). Ask for advice at the pharmacy.
- If your child was in contact with something to which they are allergic and/or something to which they have previously had a severe allergic reaction and:
- symptoms appear quickly:
- give them epinephrine right away (EpiPen, Allerject, or Emerade);
- if you have no epinephrine, call 911.
- If there are no symptoms for the moment:
- go to the Emergency Department right away;
- keep epinephrine at hand during transport;
- if symptoms appear and quickly become more serious, give them epinephrine right away.
- symptoms appear quickly:
When to seek medical attention
If your child have any of these signs:
- moments when it is difficult to breathe, for no reason;
- a rash or redness on their skin for no apparent reason;
- Often has a runny nose or red eyes, for no apparent reason;
- Often feels nauseous, vomits, or has diarrhea, for no apparent reason.
Call 811, Option 1, to speak with a nurse, or contact a healthcare professional (pharmacist, doctor, or nurse practitioner), if any of the signs listed above apply.
When to go to the hospital right away
You had to give your child epinephrine (EpiPen, Allerject or Emerade), even if they are feeling better now.
Your child has symptoms of a severe allergic reaction:
- Your child’s breathing is raspy (stridor) or air is not getting through properly.
- Your child’s lips, tongue or face are swollen.
- Your child has a rash on their body or their skin itches.
- Your child doesn’t react as usual, is floppy, or is difficult to wake.
- You can feel their heart racing.
- They have a stomach ache, vomiting, or diarrhea.
Your child was in contact with an allergen to which they have previously had a severe reaction.
Need help?
Call Info-Santé at 811, Option 1, to speak with a nurse at any time.
Go to the pharmacy for advice on medications or treatment.
Make an appointment at your medical clinic or CLSC.
If you do not have a family doctor, go to https://gap.soinsvirtuels.gouv.qc.ca/en or call 811, Option 3.
Last update: January 1, 2026
The information sheet does not replace medical advice. If you have any doubts, contact a healthcare professional.
References:
- Guides infirmiers d’éducation aux autosoins, CIUSSS de la Capitale-Nationale
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