Immunodeficiency Due To A Complement Regulatory Deficiency C5681111
A disorder affecting proteins that regulate complement activity, leading to uncontrolled immune responses. Often genetic in origin. Management focuses on preventing infections and controlling inflammation.
Key facts at a glance
- ICD-10
- D89.9
- ICD-11
- 3A00.0
- Body system
- immunologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Lupus-like syndrome
Thrombotic complications
Generalized symptoms
(immunologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Recurrent pyogenic infections
(immunologic)Membranoproliferative glomerulonephritis
(renal)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
Immunoglobulin Replacement Therapy
Regular IVIG administration provides functional antibodies to compensate for complement regulatory deficiency and prevent infections from encapsulated organisms.
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Antimicrobial Prophylaxis
Continuous antibiotic prophylaxis to prevent recurrent respiratory and systemic infections common in complement regulatory defects.
Additional treatment options
Autoimmune and Malignancy Screening
Regular screening for autoimmune manifestations and hematologic malignancies associated with complement regulatory deficiencies, including periodic complete blood counts and autoantibody testing.
monitoringEarly Vaccination Protocol
Aggressive immunization schedule with conjugate vaccines against encapsulated pathogens before infection exposure occurs.
procedureEnvironmental Risk Reduction
Avoidance strategies including smoking cessation, air quality management, and limiting exposure to respiratory pathogens to reduce pulmonary complications.
lifestyleWhen 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 Immunodeficiency Due To A Complement Regulatory Deficiency C5681111?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalMedication Comparisons
Compare medications used to treat Immunodeficiency Due To A Complement Regulatory Deficiency C5681111. 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