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Allergic Reaction (cont.)

Allergic Reaction Prognosis

Most allergic reactions respond well to medications.

  • Hives, swelling, breathing difficulties, even anaphylaxis often improve and disappear in minutes to hours.
  • Some rashes take several days to heal.
  • Your health-care provider may want to monitor you for a few hours.
  • A dangerous allergic reaction may warrant an overnight stay in the hospital.

Allergic reactions will continue with continued exposure to the allergen or trigger.

  • You need to avoid any triggers you know cause an allergic reaction.
  • Ingested, inhaled, or injected allergy triggers may take days for the body to eliminate.
  • Continued medical therapy is necessary for continued exposure.

You may be referred to an allergy specialist if you continue having reactions.

Medically Reviewed by a Doctor on 3/28/2014

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