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
- Your allergies are already being treated by a healthcare professional, follow their advice.
- Keep an eye on your symptoms, especially during the first 2 hours after being exposed to the allergen.
- Ask the pharmacist for over-the-counter medication that could help you.
- If you were in contact with something to which you are allergic and/or something to which you have previously had a severe allergic reaction and:
- symptoms appear quickly:
- take your epinephrine right away (EpiPen, Allerject, or Emerade);
- if you do not have epinephrine, call 911 right away.
- If there are no symptoms for the moment:
- ask someone to drive you to the Emergency Department right away;
- keep epinephrine at hand during transport;
- if symptoms appear and quickly become more serious, take your epinephrine right away.
- symptoms appear quickly:
When to seek medical attention
If you have any of these signs:
- you have difficulty breathing for no apparent reason;
- you have a rash or redness on their skin for no apparent reason;
- you have a runny nose or red eyes for no apparent reason;
- you often feel nauseous, vomits, or have 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 take epinephrine (EpiPen, Allerject or Emerade), even if you are feeling better now.
You have symptoms of a severe allergic reaction:
- Your breathing is raspy (stridor) or air is not getting through properly.
- Your lips, tongue or face are swollen.
- You have a rash on your body or itchy skin.
- You feel weak, dizzy, your heart is racing.
- You have a stomach ache, vomiting, diarrhea.
You have been in contact with something that has previously caused you to have a severe allergic 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
See also
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