Allergy that occurs throughout the year is called _______allergy.

Seasonal

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Perennial

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Biennial

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Annual

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Solution

The correct option is B Perennial
Perennial allergy can be defined as a chronic allergic reaction to house dust.
House dust contains mould and fungal spores, fibres of the fabric, pet dander and insect particles.
These allergies occur throughout the year hence, they are called perennial allergy.
So, the correct answer is 'Perennial'.

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