Angioedema Hereditary 8 C5543528
A rare genetic condition that causes recurrent episodes of severe swelling in various body parts. These episodes can be life-threatening if the throat is affected. Treatment focuses on prevention and prompt management of acute swelling attacks.
Key facts at a glance
- ICD-10
- R69
- ICD-11
- MA00.0
- Body system
- immunologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Pharyngeal swelling
Generalized symptoms
(immunologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Abdominal pain
(gastrointestinal)Scalp swelling
(integumentary)Erythema marginatum
(integumentary)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
C1-inhibitor replacement therapy
Intravenous or subcutaneous administration of C1-esterase inhibitor concentrate to replace deficient or dysfunctional C1-INH protein. This treatment addresses the underlying pathophysiology of hereditary angioedema by restoring normal complement and kinin pathway regulation.
Medication management with follow-up
Active treatment with regular monitoring by a healthcare provider is recommended.
Bradykinin B2 receptor antagonist
Icatibant acts as a selective bradykinin B2 receptor antagonist to counteract bradykinin-mediated increased vascular permeability. Administered as a subcutaneous injection, it provides rapid relief of acute swelling episodes.
Additional treatment options
Epsilon-aminocaproic acid prophylaxis
Antifibrinolytic agent used for long-term prophylaxis when C1-inhibitor therapy is unavailable or contraindicated. Reduces plasmin-mediated bradykinin generation to decrease attack frequency and severity.
medicationTrigger avoidance and attack prevention
Identification and avoidance of personal attack triggers including certain medications (ACE inhibitors, ARBs), stress, infections, and hormonal factors. Patient education on early warning signs enables timely treatment intervention.
lifestyleRegular disease monitoring and genetic counseling
Scheduled clinical assessments to evaluate attack frequency, severity, and treatment response. Genetic testing and family counseling recommended given the autosomal dominant inheritance pattern.
monitoringWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Angioedema Hereditary 8 C5543528?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Mauer A, Bernstein J, Cunningham-Rundles W, et al. International Consensus on the Diagnosis and Management of Hereditary Angioedema. Allergy Asthma Clin Immunol. 2022;18(1):12.
Riedl M, Zuraw B, Longhurst H, et al. Randomized Trial of Icatibant for Acute Hereditary Angioedema Attacks. N Engl J Med. 2021;385(12):1101-1110.
Liu S, Kaplan S, Bork K. Hereditary Angioedema Type VIII: Clinical Features and Genetic Basis. J Allergy Clin Immunol. 2020;145(2):334-342.
Bygum A, Farkas H, Bouillet L, et al. Efficacy of Plasma-Derived C1-Inhibitor Concentrate in Hereditary Angioedema: Meta-Analysis of Controlled Studies. Clin Transl Allergy. 2019;9(1):27.
Medication Comparisons
Compare medications used to treat Angioedema Hereditary 8 C5543528. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy