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Adverse Drug Reaction

Medically reviewed by Drugs.com. Last updated on Feb 4, 2024.

What is an adverse drug reaction?

An adverse drug reaction is a harmful reaction to a medicine given at the correct dose. The reaction can start soon after you take the medicine, or up to 2 weeks after you stop. An adverse drug reaction can cause serious conditions such toxic epidermal necrolysis (TEN) and anaphylaxis. TEN can cause severe skin damage. Anaphylaxis is a sudden, life-threatening reaction that needs immediate treatment. Ask your healthcare provider for more information on TEN, anaphylaxis, and other serious reactions.

What are the signs and symptoms of an adverse drug reaction?

How is an adverse drug reaction diagnosed?

Your healthcare provider will ask about your medical history and allergies. You may need additional testing if you developed anaphylaxis after you were exposed to a trigger and then exercised. This is called exercise-induced anaphylaxis. Medicines can be a trigger. You may also need any of the following:

How is an adverse drug reaction treated?

What steps do I need to take for signs or symptoms of anaphylaxis?

What safety precautions do I need to take if I am at risk for anaphylaxis?

Call 911 for signs or symptoms of anaphylaxis,

such as trouble breathing, swelling in your mouth or throat, or wheezing. You may also have itching, a rash, hives, or feel like you are going to faint.

When should I seek immediate care?

When should I contact my healthcare provider?

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.