What is a peripheral attack?
Hereditary angioedema (HAE) can cause swelling in various parts of the body. These swellings, sometimes called ‘attacks’, can be painful and some may need immediate medical attention. Sometimes these attacks can affect the hands, legs, arms, feet or genitals, usually in the tissue just below the skin (subcutaneous). These are called ‘peripheral attacks’ and they make up more than half of all HAE attacks.