Typically through exposure. It can be a test in a doctor's office for an allergy suspected, or a brush with danger in the real world.
I don't know of anyone who has died of a pollen allergy, but bee stings can be fatal if the allergy is severe enough. I don't envy the people who find out about their bee sting allergy in such a manner.
no subject
I don't know of anyone who has died of a pollen allergy, but bee stings can be fatal if the allergy is severe enough. I don't envy the people who find out about their bee sting allergy in such a manner.
no subject
no subject
Perhaps the moral is to be kindest to the little creatures, especially the ones who have a single tooth, claw, or sting.