Hereditary angioedema (HAE) is a rare genetic condition that causes recurrent, unpredictable episodes of severe swelling — in the face, limbs, abdomen, or throat — due to a missing or malfunctioning protein called C1-inhibitor. Abdominal attacks can be agonizing and are frequently mistaken for appendicitis or other emergencies, while swelling in the throat or airway (a laryngeal attack) can become life-threatening within hours if untreated, carrying a real risk of asphyxiation. Because HAE is passed down in families (each child of an affected parent has a 50% chance of inheriting it), many people grow up watching relatives suffer or even die from attacks before effective treatments existed. A 2025 study from Turkey took a close look at just how much this unpredictable, sometimes frightening condition weighs on mental health — and found the toll is substantial. If you live with HAE, the fear and worry you carry alongside the physical symptoms are real, and both deserve care.
A Condition That Keeps You on Guard
Unlike many chronic illnesses with a predictable pattern, HAE attacks can strike with little or no warning, and their severity and location can vary enormously from one episode to the next. Abdominal attacks are so often mistaken for other conditions — sometimes leading to unnecessary surgery before the real diagnosis is found — that many people with HAE spend years being dismissed or misdiagnosed. A 2025 study from Ege University in Turkey set out to directly measure how this uncertainty and danger affects mental health, assessing 100 adults with confirmed HAE type 1 or 2.
What the Research Found
- Anxiety affected more than half of participants. 54% of people with HAE showed clinically significant anxiety symptoms, measured using a validated hospital anxiety and depression scale.
- Depression affected over a third. 36% showed clinically significant depressive symptoms — and depression was especially common among those who'd had a laryngeal (throat) attack recently, underscoring how frightening those episodes can be.
- Death anxiety was the most striking finding of all. 77% of participants — more than three in four — scored high on a dedicated death anxiety scale, and this fear was significantly higher in people with recent or more severe laryngeal attacks.
- Women and younger adults reported more anxiety. Anxiety was significantly higher among women than men, and among adults under 65 compared with older adults — suggesting the unpredictability of HAE may weigh especially heavily during the years people are building careers and families.
- A family history of death from HAE is common and consequential. Nearly a third of participants had a family member who had died from an HAE-related attack, a history that understandably shapes how closely people watch their own symptoms.
You're Not Imagining the Fear
A separate systematic review of the psychological research on HAE found a consistent pattern: people with HAE report significantly higher anxiety and depression than the general population, often centered on the sheer unpredictability of attacks and the specific terror of a laryngeal episode, where the risk of asphyxiation is real. The review also highlighted a less-discussed worry: because HAE is inherited, many people wrestle with real anxiety about having children and potentially passing the condition on. If chronic uncertainty about your body's next move is part of your daily life, our page on living with chronic illness or pain may offer additional support alongside what's here.
When Fear of Dying Becomes Its Own Burden
The 77% death anxiety rate found in people with HAE is strikingly high — and it makes complete sense given that laryngeal attacks are genuinely life-threatening if untreated, and many people with HAE have watched a relative go through a frightening or even fatal attack. If a persistent, heavy fear of death or dying is something you recognize in yourself, you don't have to carry it alone or treat it as separate from your physical condition. Our page on coping with death anxiety offers tools specifically for this kind of fear, and our broader page on feeling anxious or stressed has additional grounding strategies that can help in the moments between attacks.
Ways to Cope
- Build a clear, written action plan for attacks. Knowing exactly what to do — which medication to take, when to go to the emergency room, who to call — can turn a terrifying unknown into a manageable, rehearsed routine, which itself can lower day-to-day anxiety.
- Ask your care team about on-demand and preventive treatment options. Modern HAE therapies have changed the landscape significantly since many older family stories of untreated attacks — effective treatment can reduce both the frequency of attacks and the fear of the next one.
- Name the death anxiety instead of pushing it down. Given how common and understandable this fear is in HAE, naming it explicitly to a therapist or doctor familiar with chronic illness can open the door to real support, rather than carrying it silently.
- Consider genetic counseling if family planning is on your mind. A genetic counselor can walk through inheritance risk, testing options, and what support looks like for a child who may inherit HAE — turning an abstract worry into informed, concrete next steps.
- Connect with others who truly understand. HAE patient organizations and support groups bring together people who don't need the unpredictability or the fear explained to them — that kind of understanding can meaningfully ease the isolation this condition can bring.