(HealthDayNews) -- Allergic reactions to medications can occur with drugs you've taken before without incident -- or to a drug that your doctor hasn't prescribed to you before.

According to Health Canada, most allergic reactions occur within one hour of taking the medication.

Signs of an allergic reaction include:

  • Hives, which are itchy, red and swollen patches on the skin.
  • A skin rash.
  • Itching of the lips, tongue and possibly face.
  • Sensitivity of the skin to sunlight.

If you experience anything unexpected after starting a medication, tell your doctor immediately.



-- Felicity Stone

Last Updated: Jan-23-2004