Outlook

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.