Pollen allergy: the causes

The presence of pollen in the air we breathe is the cause of allergy to pollen.

Allergy is a defense reaction of the body against a substance that normally is harmless. In case of allergic reaction, the body will release chemical mediators that generate a kind of inflammatory reaction. Thus, in the case of pollen allergy, when this substance comes into contact with the respiratory mucosa, it can cause irritation and allergies in susceptible persons.

If the allergic person comes into contact with the pollen in the air, the airways (nose, larynx, bronchi) in contact with the inhaled air will be affected by the allergic reaction.

Some people who are allergic to pollens may have different reactions when eating raw fruits or vegetables: Quincke's edema, itching of the mouth ... We can then talk about cross-allergies.

This is due to the fact that some pollen and some foods have all - or some - of their structure that is identical. For example, an allergic to birch pollen will not be able to eat apples or celery. A person allergic to grass pollen, can no longer eat tomatoes or peppers ....

True / False on the hikes

What is a respiratory allergy? At what age can we develop an allergy? Is it hereditary? Can we prevent an allergy? The essentials about allergies in 19 questions!

Want to react, share your experience or ask a question? See you in our FORUMS Allergy or A doctor answers you!

To read also our files on the various allergies:

> Milk allergy
> Lactose intolerance
> Allergy with cat hair
> Mite allergy

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