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Allergy Test


Overview

An allergy is a reaction by immune system to some foreign substance in body.Immune system produces substances known as antibodies. When someone have allergies, the immune system makes antibodies that identify a particular allergen as harmful, even though it is not.

When person come in to contact with allergen, its immune system’s reaction can inflame your skin, sinuses, digestive system or respiratory system. Severity of allergies varies from person to person and can range from minor irritation to anaphylaxis — a life-threatening emergency.

As per one research article about 20-30% of Indian population suffers from at least one allergic diseases, from which 55% cases are of allergic rhinitis.

Common allergens may include:

  • Few Drugs
  • Skin contact of poison plants, animal scratch, Pollen, Latex
  • Dust
  • Food
  • Insect venom
  • Mold
  • Pet and other animal dander
  • Pollen

Allergies are of different types and the symptoms may vary for each of the type:

  • Nasal or skin allergy (allergic rhinitis)
  • Itchy, watery eyes
  • Sneezing
  • Itchy, runny nose
  • Rashes
  • Feeling tired or ill
  • Hives (a rash with raised red patches)
  • Food allergy
  • Stomach cramp
  • Vomiting
  • Diarrhea
  • Insect sting
  • Swelling
  • Redness
  • Pain

Symptom of Anaphylaxis

  • Some types of allergies, including allergies to foods and insect stings, can trigger a severe reaction known as anaphylaxis.
  • Loss of consciousness
  • A drop in blood pressure
  • Severe shortness of breath
  • Skin rash
  • Lightheadedness
  • A rapid, weak pulse
  • Nausea and vomiting
  • A family history of asthma or allergies, such as hay fever, hives or eczema
  • Children are more prone to allergies
  • Asthma or other allergic condition

Diagnosis of allergy is based in symptoms, physical examinations, various exposure and food habit

Your doctor might also recommend one or both of the following tests

  • Skin test
  • Blood Test-Specific IgE (sIgE) blood testing, commonly called radioallergosorbent test (RAST) or ImmunoCAP testingEffects on the skin

Allergies

i. Is there a blood test for allergy? Which other diagnostic tests are there for allergy?+
ii.How do doctors find out what a person is allergic to?+
iii.Is allergy seasonal?+
iv.What is Elimination test for food allergy? +