How anaphylaxis develops
When someone experiences anaphylaxis, their immune system overreacts to a trigger, releasing chemicals that cause widespread inflammation. This reaction can affect multiple body systems simultaneously:
- The allergic cascade begins within minutes of exposure to the trigger
- Inflammatory chemicals are released throughout the body
- Blood vessels dilate, causing a drop in blood pressure
- Airways may narrow, making breathing difficult
- Other body systems become affected
Understanding this process helps explain why symptoms appear in different parts of the body and why prompt treatment is essential.