Respiratory allergies on the rise in Bengaluru City

Bengaluru,April 10th, 2018 : Allergic disorders are common in our country. In India every 6th person is suffering from allergic disorder. Out of allergy diseases , respiratory allergies are the most significant in Bengaluru city. Respiratory allergy disease has been on upward trend in terms of prevalence as well as severity in the city.

Recent studyon respiratory allergy done by Neuberg Anand Diagnostics Labs in Bengalurulooked in to the findings of allergy tests done for 318 patients duringJanuary- December 2017 revealed that 75 % of patients are allergic to housedust mites which is the main reason for respiratory illness.

Prevalanceof air pollution is quite common in Bangalore city, but staying at indoors areallergic to people due to micro organism present inside homes. Of the 318 whounderwent allergy test , 111 were between 0 and 20 years who are the mostaffected age group.

Dr. SamratBordoloi, Pathologist In-charge of division of Immunopathology Neuberg AnandDiagnostic Laboratory, Bengaluru  whoconducted this studysaid that “ As a laboratory our focus is on the in vitrotests which include blood-based tests to screen for allergies and identify specificallergens causing the symptoms which play a crucial role in patient management.Test results reflect the allergy trends. Most of the allergies are seasonal,but we look at patients who suffer allergic rhinitis and chronic coughirrespective of season.  More hygieneconscious and children are not exposed to outdoor allergens like pollen hasspurred the immune system to over react on house dust allergen due to lack ofexposure to natural allergen in the outdoor environment. Hypothesis is thathigh standard of living  have killedimmunity to allergens”.

Dr GayathriPandit,Consultant ENT surgeon and Allergy Specialist, Samarth ENT and AllergyCentre, Bangalore said that “House dust mite remains the main respiratoryallergen contributing to nearly 75 percent of sensitivity. Next 20 percent isfrom pollens of which Parthenium, Amaranthus spinosum, Prosopis julifera andRicinus communis, i.e castor oil plant contribute majorly to respiratoryillness”.

Allergicrhinitis is the most common form of non-infectious rhinitis, affecting 500million people worldwide, with one-fifth of those affected living in the Indiansubcontinent.Several studies in Bangalore city have suggested dues to aphenomenal growth and a distinct shift of its arboriculture in the last 2 decades,there has certainly been change in allergen profile has been suspected. Largeoutskirts around the city have become residential and, office and commercialhubs resulting in a considerable change in pollen allergen flora.

This makescomprehensive allergy profiling a crucial step in management of allergy.

Aretrospective review ofthe study for the previous year indicates

1. Dustmites continues to be a major allergen associated with symptoms with 75 % ofpatients testing positive.

2.The otherprominent allergens we could identify include- Cockroach allergens (8%), Cultivated Rye (7%) and Sunflower pollen (6%)

3.The otherallergens we could identify included animal associated allergens- dog hair, catdander, chicken feathers, plant associated allergens- Eucalyptus, Ragweed,Timothy grass and trichophyton

4.Thisprovides an insight to understand the allergen profiling required in the regionhowever two factors need to be considered before drawing further conclusions

There iscross-reactivity between allergen antigens which needs to be evaluated beforeidentifying potential allergens. The symptoms and their profiling play acrucial role in effective use of testing strategies in both diagnosis andprognosis

Inconclusion we want to state that a patient centric partnership between clinicalspecialists and diagnostic laboratories with constructive counselling effortsis the need of the hour for effective patient management. 

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