Hereditary angioedema (HAE) is caused by a low level or improper function of a protein called the C1 inhibitor. It affects the blood vessels. An HAE attack can result in rapid swelling of the hands, feet, limbs, face, intestinal tract, larynx (voicebox), or trachea (windpipe).
Is HAE a disability?
Principal findings: HAE may result in physical and/or psychological disability because of the lack of effective treatments and the unpredictability of symptom severity.
Is HAE life-threatening?
Hereditary angioedema (HAE) is a rare but potentially life-threatening disease affecting approximately 1 in 67,000 individuals, with no identified differences in prevalence due to sex or ethnicity.
Is HAE an autoimmune disease?
Occasional reports link HAE with autoimmune conditions and only few studies have been conducted on large patient populations with controversial results. Although several immunoregulatory disorders have been documented, the prevalence of defined autoimmune diseases in patients with HAE remains debated.
What triggers HAE?
Triggers of an HAE attack Emotional stress. Injury. Infection. Dental procedures or tonsillectomy. Hormonal influences, like menstruation.
What are the symptoms of HAE?
The early warning signs of an HAE attack
- painless, non-itchy rash.
- tingling skin.
- skin tightness.
- fatigue.
- irritability.
- sudden mood changes.
- anxiety.
What HAE looks like?
About 25 percent of people with HAE experience a non-itchy, blotchy red rash that happens before or during an attack. This rash can also appear as red circles.
What age does hereditary angioedema start?
Hereditary angioedema with C1 inhibitor deficiency (C1-INH-HAE) is characterized by recurrent swelling in subcutaneous or submucosal tissues. Symptoms often begin by age 5–11 years and worsen during puberty, but attacks can occur at any age and recur throughout life.
How long do HAE attacks last?
On average, untreated individuals have an attack every 1 to 2 weeks, and most episodes last for about 3 to 4 days. The frequency and duration of attacks vary greatly among people with hereditary angioedema, even among people in the same family.
What kind of doctor treats HAE?
Your healthcare team should feature a doctor who has treated HAE, usually an allergist-immunologist. Other specialists who may be on your HAE care team include dermatologists, genetic counselors, OB-GYNs, and gastroenterologists.
How do you treat HAE?
In HAE types I and II, the treatment of choice in acute attacks consists of replacement with commercially available C1 inhibitor (C1-INH) concentrates or kallikrein inhibitor or, if those are unavailable, fresh-frozen plasma. In HAE with normal C1 inhibitor levels, infusion of C1-INH has proven to be ineffective.
Is haem arginate an orphan drug?
For example, haem arginate, used to treat acute intermittent porphyria, variegate porphyria, and hereditary coproporphyria [12], is an orphan drug.
What is the history of the orphan virus?
Medical orphans An orphan virus, such as hepatitis G [1], is not linked to a recognized disease. The term was introduced as long ago as 1954 by Melnick, who described ‘… new viruses, provisionally called “orphan viruses” (as we know so little to what diseases they belong), from patients suspected of having nonparalytic poliomyelitis’[2].
What is an example of an orphan drug?
An orphan drug can be defined as one that is used to treat an orphan disease. For example, haem arginate, used to treat acute intermittent porphyria, variegate porphyria, and hereditary coproporphyria [12], is an orphan drug.
What is the PMCID for rare diseases and orphan drugs?
PMCID: PMC1885017 PMID: 16487216 Rare diseases and orphan drugs J K Aronson, Chairman of the Editorial Board, British Journal of Clinical Pharmacology Author informationCopyright and License informationDisclaimer
