A skin rash or a few raised welts may seem like nothing to worry about — but in some cases, they are the first sign of a severe and potentially fatal allergic reaction. Anaphylaxis, a rapid multi-system response, can develop within minutes and requires immediate emergency treatment. Knowing the difference between a minor reaction and a medical emergency could save a life.

Skin reactions are among the most common health complaints, frequently attributed to everyday causes such as weather changes, fabrics, soaps, or mild irritants. Because they are so widespread and…


