Did you know?
Anaphylaxis, a serious allergic reaction, can occur as:
- A single reaction that occurs immediately after exposure to the allergenic food and gets better with or without treatment within the first minutes to hours. Symptoms do not recur later in relation to that episode.
- Two reactions. The first reaction includes an initial set of symptoms that seem to improve and go away but then reappear. The second reaction can occur between 8 and 72 hours after the first reaction.
- A single, long-lasting reaction that continues for hours or days following the initial reaction.