Symptoms

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Symptoms of an allergic reaction usually develop within a few minutes of being exposed to something you're allergic to, although occasionally they can develop gradually over a few hours.

Although allergic reactions can be a nuisance and hamper your normal activities, most are mild.

Allergic symptoms

Common symptoms of an allergic reaction include:

  • Sneezing
  • Runny, inflamed nose
  • Itchiness in the eyes
  • Teary, red eyes
  • Coughing
  • Itchiness of the roof of the mouth
  • Bronchial asthma symptoms

Medically Reviewed by a doctor on 22 Aug 2017
Medical Author: Dr. med. Diana Hysi