An insect sting can be dangerous especially if it affects specific areas of the body (eyes, lips, face, tongue and throat) or if the person stung is a small child or somebody who suffers from allergies. In this last case there is a risk of anaphylactic shock.
What to do.
First of all, if the stinger remains in your skin, it is important to remove it using tweezers. After disinfecting the sting, rub it with a cotton ball soaked in ammonia (which deactivates the poison) and then apply ice (which slows down the absorption). If the person has been stung in the mouth it is necessary to make some gargles with cold salted water (add two teaspoons of salt in a glass of water).
In case of shock.
If the person looks pale, sweaty, has trouble breathing, has swollen lips and/or eyes, call the 118. Keep in mind that sweat, hairspray, gel, perfumes and bright-colored clothes attract insects.