How to Say “Allergic Reaction” in Spanish

reacción alérgica
/reaɡθjon aleɾxika/from spelling rules
In Spanish, 'allergic reaction' is translated as reacción alérgica.
This phrase describes a physical response by the immune system to a substance that causes an allergy.

What does it mean word for word?

The phrase is composed of the noun reacción (reaction) and the adjective alérgica (allergic).

How does it change in a sentence?

Because reacción is a feminine noun, the adjective must agree in gender and be written as alérgica. To form the plural, both the noun and the adjective must be made plural, resulting in reacciones alérgicas.

How do you pronounce it?

/reaɡθjon aleɾxika/

Did you know?

  • Beyond medical use, Spanish speakers use alergia to describe a strong psychological aversion or hatred, such as saying Tengo alergia a los lunes to mean 'I hate Mondays'.
  • While reacción alérgica is the technical term, a Spanish speaker is more likely to say me dio alergia to describe the event, which literally translates to 'allergy gave to me'.
  • In Spanish medical contexts, the word reacción is often replaced by the word shock when describing a severe, life-threatening allergic reaction known as anaphylaxis.

Examples in context

  • ¿Qué pasa cuando tiene una reacción alérgica?
    What happens when you have an allergic reaction?
    This sentence is useful for asking about the consequences of having a reacción alérgica.
    Tatoeba #10642260 by DJ_Saidez, translation #9849604 by NurseMeeks
  • Le picó una avispa y tuvo una reacción alérgica.
    A wasp stung him and he had an allergic reaction.
    This sentence illustrates a situation where someone had a reacción alérgica after being stung by a wasp.
    Tatoeba #10160300 by carlosalberto, translation #10160297 by carlosalberto
  • Tengo una reacción alérgica a los frutos secos.
    I am having an allergic reaction to nuts.

Example conversation

Javier and Sofía are in a kitchen after eating a snack.

  1. Javier

    Sofía, ¿te sientes bien?
    Sofía, do you feel okay?
  2. Sofía

    No, creo que tengo una reacción alérgica.
    No, I think I am having an allergic reaction.
  3. Javier

    Tranquila, voy a buscar tu medicina.
    Calm down, I am going to look for your medicine.
  4. Sofía

    Gracias, Javier, lo necesito pronto.
    Thank you, Javier, I need it soon.

Sources

  • IPA marked “from spelling rules” is derived from standard Spanish spelling, where Wiktionary gives none.
  • Example sentences: Tatoeba CC BY 2.0 FR.
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Terry Hayden
Terry HaydenHelp make this guide better. Spot a mistake, know another way to say it, or have an example from real life? Share it below.
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