Diagnostic_Services

Skin Tests are used to confirm clinical sensitivity induced by aeroallergens, foods, some drugs, a few chemicals, and hymenoptera venom.

Indicated in following diseases:

  • Allergic Rhinitis
  • Asthma
  • Food Allergy
  • Atopic dermatitis
  • Hymenoptera hypersensitivity

Factors affecting skin test

  • Age-infancy or old age
  • Sex -no difference
  • Race-wheeling more in blacks
  • Circadian rhythm peak in late evening
  • Seasonal variation pollen allergy
  • Skin condition-skin eczema
  • Other condition-diabetic neuropahthy

*Skin test can be performed even at one month of age

Method

Skin prick testing is done demonstrates an allergic response to a specific allergen.  SPT can help to confirm the presence of an allergy to pollen, food, dust, mites, moulds and animal dander’s. SPT is a simple, safe and quick test, providing results within 15-20 minutes. This will enable you to receive a diagnosis and management plan at your appointment.

The skin prick test introduces a tiny amount of allergen into the skin, eliciting a small, localized allergic response, in the form of a wheal (bump) and flare (redness) at the site of testing. These tests can be carried out on all age groups, including babies. The test allergens are selected following a discussion with your clinician and based on your history.

Allergy_Skin_test_method

Allergy Testing Procedure in children

Allergy_Skin_test

Allergy testing in Adults

 Prerequisites

The patient needs to avoid taking anti-histamines and certain other medications before the test.

Antihistamine for example cetrizine,loratidine,fexofenadine should stop at least 5 to 7 days before the testing

Tricyclic anti depressant ( doxepine)and atypical antipsychotic drugs (ex.risperidone,olanzapine,ziprasidone) should be taper down if required a wk before the testing.

Beta blockers should be stopped in all instances 24 hour before the testing

Potential Risks of Non-Specialist Care

  • Misinterpretation of test results
  • Over diagnosis
  • Mismanagement
  • Over prescription of meds and treatments
  • Costly and unnecessary allergen avoidance 
 
 Allergy Blood Test >>

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