allergic attack

Translations
аллергическая реакция
He had an allergic attack after eating peanuts.
У него была аллергическая реакция после употребления арахиса.
Definitions
An allergic attack is a sudden and severe reaction of the immune system to a substance (allergen) that the body mistakenly identifies as harmful, leading to symptoms such as difficulty breathing, swelling, hives, or anaphylaxis.
Words
allergic

adjective
аллергический
attack

noun
приступ