Igg4 Related Pachymeningitis C4545992
Inflammation and thickening of the dura mater (protective covering around the brain) due to IgG4-related disease. Managed with corticosteroids and immunosuppressants, sometimes requiring neurosurgical evaluation.
Key facts at a glance
- ICD-10
- G43.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Vision loss
Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Headache
(neurologic)Cranial nerve palsy
(neurologic)Hearing loss
(neurologic)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
Glucocorticoid therapy
High-dose corticosteroids are the cornerstone of treatment for IgG4-related pachymeningitis, reducing inflammation and preventing further meningeal damage. Tapering schedules are individualized based on clinical response.
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Rituximab
Anti-CD20 monoclonal antibody targeting B-cells is effective for refractory or relapsing IgG4-related pachymeningitis when conventional therapy fails or is contraindicated.
Additional treatment options
Immunomodulatory agents
Steroid-sparing agents such as azathioprine, mycophenolate mofetil, or methotrexate may be used for long-term maintenance therapy to reduce steroid dependence.
medicationSerial MRI imaging
Regular magnetic resonance imaging of the brain and spine to assess treatment response, detect residual inflammation, and identify complications such as dural thickening or hydrocephalus.
monitoringPain management and supportive care
Multidisciplinary supportive care including headache management, physical therapy for neurological symptoms, and psychological support for chronic illness adjustment.
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 Igg4 Related Pachymeningitis C4545992?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalMedication Comparisons
Compare medications used to treat Igg4 Related Pachymeningitis C4545992. 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