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Allergies: Care Instructions


Allergies occur when your body's defence system (immune system) overreacts to certain substances. The immune system treats a harmless substance as if it were a harmful germ or virus. Many things can make this happen. These include pollens, medicine, food, dust, animal dander, and mould.

Allergies can be mild or severe. Mild allergies can be managed with home treatment. But medicine may be needed to prevent problems.

Managing your allergies is an important part of staying healthy. Your doctor may suggest that you have allergy testing to help find out what is causing your allergies.

Severe allergies can cause reactions that affect your whole body (anaphylactic reactions). Your doctor may prescribe a shot of epinephrine to carry with you in case you have a severe reaction. Learn how to give yourself the shot and keep it with you at all times. Make sure it is not expired.

Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor or nurse advice line (811 in most provinces and territories) if you are having problems. It's also a good idea to know your test results and keep a list of the medicines you take.

How can you care for yourself at home?

  • If you have been told by your doctor that dust or dust mites are causing your allergy, decrease the dust around your bed:
    • Wash sheets, pillowcases, and other bedding in hot water every week.
    • Use dust-proof covers for pillows, duvets, and mattresses. Avoid plastic covers because they tear easily and do not "breathe." Wash as instructed on the label.
    • Do not use any blankets and pillows that you do not need.
    • Use blankets that you can wash in your washing machine.
    • Consider removing drapes and carpets, which attract and hold dust, from your bedroom.
  • If you are allergic to house dust and mites, do not use home humidifiers. Your doctor can suggest ways you can control dust and mites.
  • Look for signs of cockroaches. Cockroaches cause allergic reactions. Use cockroach baits to get rid of them. Then, clean your home well. Cockroaches like areas where grocery bags, newspapers, empty bottles, or cardboard boxes are stored. Do not keep these inside your home, and keep trash and food containers sealed. Seal off any spots where cockroaches might enter your home.
  • If you are allergic to mould, get rid of furniture, rugs, and drapes that smell musty. Check for mould in the bathroom.
  • If you are allergic to outdoor pollen or mould spores, use air-conditioning. Change or clean all filters every month. Keep windows closed.
  • If you are allergic to pollen, stay inside when pollen counts are high. Use a vacuum cleaner with a HEPA filter or a double-thickness filter at least two times each week.
  • Stay inside when air pollution is bad. Avoid paint fumes, perfumes, and other strong odours.
  • Avoid conditions that make your allergies worse. Stay away from smoke. Do not smoke or let anyone else smoke in your house. Do not use fireplaces or wood-burning stoves.
  • If you are allergic to your pets, change the air filter in your furnace every month. Use high-efficiency filters.
  • If you are allergic to pet dander, keep pets outside or out of your bedroom. Old carpet and cloth furniture can hold a lot of animal dander. You may need to replace them.

When should you call for help?

Give an epinephrine shot if:

  • You think you are having a severe allergic reaction.
  • You have symptoms in more than one body area, such as mild nausea and an itchy mouth.

After giving an epinephrine shot, call 911 even if you feel better.

Call 911 if:

  • You have symptoms of a severe allergic reaction. These may include:
    • Sudden raised, red areas (hives) all over your body.
    • Swelling of the throat, mouth, lips, or tongue.
    • Trouble breathing.
    • Passing out (losing consciousness). Or you may feel very light-headed or suddenly feel weak, confused, or restless.
    • Severe belly pain, nausea, vomiting, or diarrhea.
  • You have been given an epinephrine shot, even if you feel better.

Call your doctor or nurse advice line now or seek immediate medical care if:

  • You have symptoms of an allergic reaction, such as:
    • A rash or hives (raised, red areas on the skin).
    • Itching.
    • Swelling.
    • Mild belly pain or nausea.

Watch closely for changes in your health, and be sure to contact your doctor or nurse advice line if:

  • You do not get better as expected.

Where can you learn more?

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Care instructions adapted under license by your healthcare professional. If you have questions about a medical condition or this instruction, always ask your healthcare professional. Healthwise, Incorporated disclaims any warranty or liability for your use of this information.