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What is acute & chronic allergic reaction?

Allergic reactions can be categorized into Acute & Chronic reactions.

Acute Reactions

In general, occurs within minutes or hours when in contact (oral or contact) with allergens.

Symptoms includes:

  • Breathing difficulties, narrowing of tracheal
  • Blood pressure drop
  • Severe skin rash and itchiness
  • Acute Allergy Reaction could be life threatening. A trip to the hospital could be necessary. Carrying an Adrenaline auto-injectors (JEXT) is recommended.

Chronic Reaction In general, occurs within hours or days when in contact (oral or contact) with allergens.

Symptoms includes:

  • Skin itchiness
  • Eczema

What is acute & chronic allergic reaction?


This article is for educational purposes only. For more medical information, please consult your family doctor.


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