Anaphylaxis/Allergy: There are delayed anaphylactic reactions up to 48 hours later. You may benefit from a methylprednisolone Medrol DosePack to eradicate symptoms. Best to see your PMD ASAP, to urgent care or ER if shortness of breath, throat/laryngeal swelling, or decreased blood pressure. If you feel bad, don't wait.
Answered 4/7/2016
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