An allergy refers to an exaggerated reaction by our immune system to bodily contact with a foreign substance, known as an allergen. Common allergens include pollen, dust mites, mould, dander, and food. These allergens can trigger a variety of allergic conditions, such as hay fever, asthma, allergic eczema, hives, allergic eyes, and allergic rhinitis. An undetected allergy or intolerance can lead to cross-reactions with other foods, but pinpointing the specific food allergens responsible for the symptoms can be challenging in many cases.
Allergic conditions can be diagnosed in various ways, such as skin or blood tests and will help to identify the foods or substances that induce allergic responses or symptoms.
Skin Prick Test involves placing separate drops of solutions of allergen extracts onto the skin of your forearm or back and then using a very fine lancet to prick through the drop into the skin. A positive test results in a small raised wheal with a red surrounding flare. Results are known within fifteen minutes and the test is painless. It may be necessary for you to stop certain medications such as anti-histamine medications before a skin prick test. Oral or inhaled steroids do not interface with skin prick tests.
Patch testing is a well established method for detecting allergies to substances which come into direct contact with the skin. This reaction is known as allergic contact dermatitis and is a form of ‘delayed’ allergy because the reaction takes two to three days to develop. It is of value for the investigation of any persistent eczema and, in particular, where there is clinical suspicion of contact allergy.
We understand that you have questions, and we welcome them. Below is the collection of queries which comes frequently from our clients.
Allergy testing identifies substances that trigger allergic reactions, helping to diagnose and manage allergies.
The test involves skin prick, patch, or blood tests, depending on the type of allergen suspected.
Skin prick tests may cause slight discomfort, but they are generally well-tolerated.
Skin test results are available within 15–20 minutes, while blood tests may take a few days.
Mild redness or swelling at the test site may occur but usually resolves quickly.
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