Itm2b Amyloidosis C0268393
Itm2b Amyloidosis is a genetic disorder where abnormal proteins build up in brain blood vessels, leading to progressive decline. It causes dementia and neurological problems. Care focuses on symptom management and support.
Key facts at a glance
- ICD-10
- G40.909
- 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
Seizures
Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Progressive cognitive decline
(neurologic)Gait ataxia
(neurologic)Visual disturbances
(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
Medication management with follow-up
Active treatment with regular monitoring by a healthcare provider is recommended.
Neuroimaging surveillance
Periodic MRI or CT imaging of the brain to detect cerebral amyloid deposition, microbleeds, or white matter changes characteristic of ITM2B-related hereditary cerebral amyloid angiopathy.
Blood pressure management
Aggressive antihypertensive therapy to maintain optimal blood pressure, reducing the risk of hemorrhagic stroke which may be increased in cerebral amyloid angiopathy.
Additional treatment options
Symptomatic seizure management
Anticonvulsant therapy for patients experiencing seizures secondary to cortical involvement, selected to avoid medications that lower seizure threshold.
medicationFall prevention strategies
Home safety assessment and modification to reduce head injury risk, including removal of fall hazards, installation of grab bars, and balance training exercises.
lifestyleCognitive and neuropsychological support
Neuropsychological evaluation and ongoing cognitive support services to monitor for progressive cognitive changes and provide compensatory strategies.
psychologicalWhen 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 Itm2b Amyloidosis C0268393?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
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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.
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