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Hereditary angioedema with normal C1Inh

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Disease definition

A rare hereditary angioedema characterized by potentially life-threatening episodes of subcutaneous and/or submucosal edema without urticaria and with normal levels and function of C1 esterase inhibitor. Patients present with prolonged attacks which last for approximately two to five days and may include nonpitting edema of the skin, severe abdominal symptoms such as pain and swelling, and/or respiratory distress due to upper respiratory airways involvement. Affected locations and frequency of attacks differ slightly between subtypes. Estrogen-containing oral contraceptives and pregnancy are precipitating factors, especially in patients with a factor XII mutation.

ORPHA:528647

Classification level: Disorder

Synonym(s):
  • HAE with normal C1Inh
  • Hereditary angioneurotic edema with normal C1Inh
  • Hereditary angioedema with normal C1 inhibitor
  • Hereditary angioneurotic edema with normal C1 inhibitor
  • HAE with normal C1 inhibitor

Source: PubMed ID 28601681

Prevalence: -

Inheritance: Not applicable

Age of onset:

ICD-10: T78.3

ICD-11: 4A00.14

UMLS: C1960459

MedDRA: 10080953

A summary on this disease is available in Français, Español, Deutsch, Italiano, Nederlands Ελληνικά
Detailed information

Logo ERN: produced/endorsed by ERN(s) Logo FSMR: produced/endorsed by FSMR(s)

Guidelines
Emergency guidelines
Français (2021.pdf) - Orphanet Urgences
Polski (2009.pdf) - Orphanet Urgences
Deutsch (2009.pdf) - Orphanet Urgences
English (2009.pdf) - Orphanet Urgences
Español (2017.pdf) - Orphanet Urgences
Italiano (2009.pdf) - Orphanet Urgences
Português (2009.pdf) - Orphanet Urgences
Clinical practice guidelines
Diagnostic Keys
Français (2024) - Les clés du diagnostic Logo FSMR
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