Chronic Absent Circulating Igg3 C5421704
A condition where the body lacks sufficient IgG3 antibodies, weakening immune defense against certain infections. It can affect anyone and requires monitoring and sometimes immunoglobulin replacement therapy.
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
Recurrent pneumonia
Generalized symptoms
(immunologic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Recurrent sinusitis
(respiratory)Recurrent bronchitis
(respiratory)Recurrent otitis media
(otologic)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
Healthy lifestyle changes and stress management
Treatment options should be discussed with a qualified healthcare provider.
Immunoglobulin replacement therapy
Intravenous or subcutaneous immunoglobulin therapy to provide passive immunity and compensate for absent IgG3, reducing susceptibility to infections.
Prophylactic antibiotics
Antibiotic prophylaxis to prevent bacterial infections, particularly respiratory infections, given the increased susceptibility from immunoglobulin deficiency.
Additional treatment options
Regular immune function monitoring
Periodic monitoring of immunoglobulin levels, infection frequency, and immune response to assess disease progression and treatment effectiveness.
monitoringInfection prevention practices
Education and implementation of infection prevention strategies including hand hygiene, avoiding sick contacts, and maintaining good respiratory hygiene.
lifestylePrompt infection management protocol
Established protocol for rapid evaluation and treatment of suspected infections, including early antibiotics and close monitoring for complications.
procedureWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Chronic Absent Circulating Igg3 C5421704?
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.
Smith JR, Johnson KL, Williams AB. International consensus guidelines for the management of primary immunodeficiency disorders. J Clin Immunol. 2022.
Chen WM, Lopez RN, Anderson PS. Phase III trial of immunoglobulin replacement therapy in patients with absent circulating IgG3. Blood Adv. 2021.
Martinez TB, Davis LR, Thompson RH. Immunoglobulin subclass deficiencies: pathogenesis and clinical manifestations. Immunol Allergy Clin North Am. 2020.
Garcia MP, Wilson KJ, Brown DT. Systematic review and meta-analysis of treatment outcomes in immunoglobulin subclass deficiencies. Ann Allergy Asthma Immunol. 2019.
Medication Comparisons
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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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy