How do I know if I need an allergy test?
If you’re allergic to allergens in the air like dust, pollen or pet dander, you may develop . Also known as hay fever, this allergic reaction causes:
- Headaches
- Itchy, watery eyes
- Nasal congestion, sneezing or runny nose
- Shortness of breath, wheezing or chronic cough
- Sore Throat
Food allergy symptoms typically occur within 30 minutes of food ingestion but may occur up to two hours after ingestion. People with food allergies may experience:
- Skin symptoms such as hives, swelling of the face, lips or tongue, generalized itching.
- Respiratory symptoms such as coughing, wheezing, shortness of breath, chest or throat tightness.
- GI symptoms such as nausea and vomiting, abdominal pain and cramps, vomiting and diarrhea.
- Cardiovascular symptoms such as pale skin, weak pulse, dizziness or lightheadedness.
What does an allergy test do?
Allergy tests measure your body’s response to specific allergy triggers or allergens. If you have an allergy, your immune system overreacts. It produces antibodies (proteins) called immunoglobulin E (IgE). These antibodies trigger the release of chemicals that cause an allergic reaction.
How should I prepare for an allergy test?
Your healthcare provider will ask you to stop taking allergy medications like antihistamines three to seven days before an allergy test. These medicines can interfere with test results by stopping your immune system’s response to allergens. You should continue to take asthma medication.