Hyper Igm Syndrome Type 4 C1842413
An immune deficiency causing abnormally high protective antibodies while other antibody types remain low. This leads to recurrent infections. Medical management focuses on infection prevention and immune support.
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.
Generalized symptoms
(immunologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Recurrent respiratory infections
(immunologic)Gastrointestinal infections
(immunologic)Mucocutaneous candidiasis
(immunologic)Autoimmune thyroiditis
(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
Immunoglobulin Replacement Therapy
Regular immunoglobulin replacement to address the hypogammaglobulinemia and recurrent infections characteristic of this CD40 ligand deficiency variant, typically administered every 3-4 weeks.
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Antimicrobial Prophylaxis
Combination prophylaxis targeting both bacterial and opportunistic infections, typically including TMP-SMX for PCP prevention and appropriate antibiotics for encapsulated organisms.
Additional treatment options
Hepatic Surveillance
Regular monitoring of liver function and imaging due to increased risk of cholangitis and other hepatobiliary complications associated with Cryptosporidium and other opportunistic infections.
monitoringWater and Food Safety Measures
Avoidance of untreated water sources and raw foods that may contain Cryptosporidium or other opportunistic pathogens, including filtered or boiled water and thoroughly cooked meals.
lifestyleNutritional Optimization
Proactive nutritional support with protein-calorie supplementation and fat-soluble vitamin replacement, as chronic diarrhea and malabsorption are common complications requiring nutritional intervention.
complementaryWhen 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 Hyper Igm Syndrome Type 4 C1842413?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalMedication Comparisons
Compare medications used to treat Hyper Igm Syndrome Type 4 C1842413. 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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy