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Immediate Onset
Food Allergy (IgE)

Cause

The immune system can mistaken the common substances for invaders and cause series of inflammations

Mediators

IgE antibodies

Onset of symptoms

Within minutes or up to two hours

Symptoms

Symptoms are acute and apparent (e.g. skin rashes, runny nose, sneezing) Relatively easy to track the culprits

Delayed Onset
Food Sensitivity (IgG)

Cause

The immune system can mistaken the common substances for invaders and cause series of inflammations

Mediators

IgG antibodies

Onset of symptoms

Within hours to days

Symptoms

Symptoms are delayed and subtle (e.g. bloating, migraine, tiredness) Hard to track the culprits

  • 1. An inadequate diet can lead to malnutrition
  • 2. Oereating may also cause serious adverse reactions and even death
Reference::Hong Kong Institute of Allergy & The Hong Kong Allergy Association