Since 1998, on the initiative of the Global Initiative for Asthma (Gina), the Asthma world day has been celebrated on the first Tuesday of May, with the aim of spreading knowledge and improving its treatment.

However, to prevent is essential, not only for asthma, but also for allergies.

A few simple precautions are enough:

• avoid to go out on windy days;

• leave your clothes at the front door, to avoid bringing pollen into the bedroom;

• avoid to keep green plants in the house;

• clean the radiators at least once a month;

• cover the mattresses and pillows with antidote pillow case;

• reduce the humidity of the house, through dehumidifier air conditioning systems;

• keep ventilate your house, even in winter;

• prefer a vacuum cleaner with a suitable allergen filter.