To find the cause of an allergy, doctors often use skin tests, like the scratch test.
Allergy Testing Methods
Skin Prick or Scratch Test
- This is the most common type of skin test.
- A tiny drop of a potential allergen is placed on your skin, usually on the forearm or back. Common allergens include:
- Mold
- Pollen
- Pet dander (skin and fur)
- Foods
- Some medications
- The skin is then gently pricked or scratched to allow the allergen to enter the skin.
- If you're allergic, a small, raised bump or hive will appear at the test site.
Why Skin Tests?
Skin tests like the scratch test are a direct way to see how your body reacts to specific substances. They are:
- Quick: Results are typically available within minutes.
- Effective: They can identify a wide range of common allergens.
- Safe: The procedure is generally safe with a low risk of adverse reactions.
What to Expect During a Skin Test
- Preparation: The area of skin to be tested will be cleaned.
- Application: A small amount of each suspected allergen is applied.
- Pricking: The skin is gently pricked or scratched.
- Observation: The reaction is observed after about 15 to 20 minutes.
- Evaluation: A positive result will appear as a raised, red bump that may be itchy.
Next Steps After Testing
After a skin test, if an allergy is confirmed, your doctor will discuss:
- Avoidance: Ways to avoid the allergen.
- Medications: Options for managing allergy symptoms.
- Immunotherapy: Treatments to help desensitize you to the allergen.
By understanding how these tests work, you are better equipped to work with your doctor to identify and manage your allergies effectively.
