Anaphylaxis is a severe and potentially life-threatening allergic reaction that occurs rapidly after exposure to an allergen. Common triggers include certain foods, insect stings, medications, and latex. Symptoms can develop within minutes and may include difficulty breathing, swelling of the throat, hives, and a rapid drop in blood pressure. Immediate treatment is crucial for anaphylaxis, typically involving the administration of an epinephrine injection. This medication helps to reverse the symptoms by constricting blood vessels and opening airways. After receiving epinephrine, individuals should seek emergency medical attention, as further treatment may be necessary to manage the reaction.