Is recurrent swelling a sign of hereditary angioedema?

Question

Hello doctor,

I am 29. I have been dealing with recurrent episodes of severe swelling. I have swelling in my face, hands, and abdomen, sometimes with intense pain and no clear trigger. My doctor mentioned the possibility of hereditary angioedema, and I am trying to understand how this diagnosis is confirmed.

What blood tests confirm a hereditary angioedema diagnosis at 29?

Also, I am worried if this will pass on to my kids. They are tiny, and it is making me even sadder.

Please help.

Thank you.

Answer 1

Hello,

Welcome to icliniq.com.

I have gone through your query and understand your concern.

I am really sorry you are dealing with this.

What your doctor mentioned, hereditary angioedema (HAE, a rare, genetic condition that causes episodes of swelling in different parts of your child's body, including their face, hands, or feet), is usually confirmed with a set of specific blood tests rather than just symptoms alone.

The key tests measure the levels and function of a protein called the C1 inhibitor. Doctors typically check the quantity of C1 inhibitor in your blood, how well it functions, and also the levels of another complement protein called C4.

In most people with HAE, C4 levels are persistently low, even between attacks, and either the amount or the function of C1 inhibitor is reduced, depending on the type of HAE. These tests are usually repeated to confirm the diagnosis because levels can occasionally fluctuate.

About your concern for your children, it is completely understandable to feel worried.

HAE is most often inherited in what is called an autosomal dominant pattern, which means that if you do have it, each child has about a 50 percent chance of inheriting the condition. That said, having the gene does not always mean symptoms will be severe, and treatments today are much better than they used to be, with options to prevent attacks and manage them quickly when they occur.

If your diagnosis is confirmed, your doctor may recommend testing your children at an appropriate time, often guided by a specialist, so that if they do have it, it can be monitored early and managed safely.

You are doing the right thing by asking questions now, and you do not have to carry this uncertainty alone, since specialists in immunology or rare diseases can guide both diagnosis and family planning with much more clarity.

I hope I have answered your question.

Let me know if I can assist you further.

Thank you.