C2 Deficiency Type Ii C4017352
Complement component 2 deficiency is an immune disorder where the body lacks a protein needed to fight infections and may develop autoimmune problems. Treatment focuses on infection prevention and managing symptoms.
Key facts at a glance
- ICD-10
- D89.9
- ICD-11
- 3A00.0
- Body system
- immunologic
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Severe sepsis
Generalized symptoms
(immunologic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Recurrent respiratory infections
(immunologic)Autoimmune hemolytic anemia
(immunologic)Vasculitic skin lesions
(immunologic)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
Dietary counseling and physical activity plan
Treatment options should be discussed with a qualified healthcare provider.
Prophylactic antibiotics
Continuous or intermittent antibiotic prophylaxis tailored to individual infection patterns and organism sensitivities. May be stepped down after periods without infection.
Comprehensive infection and autoimmune surveillance
Regular monitoring for both infectious and autoimmune complications, which are more common in type II deficiency. Includes periodic autoantibody screening.
Additional treatment options
Aggressive infection management
Prompt initiation of appropriate antibiotics at first signs of infection, often requiring broader initial coverage pending culture results. May include longer treatment courses.
medicationAutoimmune disease management
Treatment of autoimmune manifestations with appropriate immunosuppression when they occur. May include corticosteroids, DMARDs, or biologics based on presentation.
medicationHealth maintenance and infection avoidance strategies
Ongoing attention to personal hygiene, wound care, dental health, and prompt medical attention for any signs of infection. Regular exercise and stress reduction to support immune function.
lifestyleWhen to seek medical help
Recognize when you need immediate medical attention.
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Frequently asked questions
Common questions about this topic.
What is C2 Deficiency Type Ii C4017352?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
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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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy