They are used to identify the allergens responsible for these allergic reactions. This sometimes allows you to limit your exposure to these factors.

The purpose of these allergy tests is to visibly simulate, on the skin, the conflict generated by the allergic sensitisation within the body and thus to identify the allergens. These tests follow the clinical examination conducted by the practitioner.

Skin tests consist in introducing the allergens through a tiny puncture less than one millimetre deep.
The reaction expected within minutes is a more or less large papule resembling a nettle sting. This reaction disappears rapidly within an hour.