Your source for all things hereditary angioedema
Hereditary angioedema (HAE) is a rare disease caused by a deficiency or dysfunction of an important protein found in blood called C1 esterase inhibitor (C1-INH). HAE can cause swelling in certain parts of the body, such as the stomach, hands, and face. The swelling can be painful and, in some cases, life threatening. HAE is genetic, meaning it runs in families.
If you or a family member has HAE, it's important to know that you're not alone; support is available.Learn more about the cause and types of HAE
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