Acute Hemorrhagic Encephalitis C1332149
A rare brain inflammation with bleeding, often following an infection. Can affect anyone and requires immediate intensive medical care.
Key facts at a glance
- ICD-10
- G43.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- critical
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Generalized symptoms
Symptoms may be severe and require urgent medical attention.
Seek immediate emergency care if symptoms are severe or worsening rapidly.
Rapid neurological deterioration
Fever
Seizures
Focal neurological deficits
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
High-dose intravenous corticosteroids
Pulse methylprednisolone therapy to suppress the acute inflammatory response causing hemorrhagic encephalitis. Treatment typically initiated immediately upon diagnosis to reduce cerebral edema and prevent further hemorrhage.
Minimally invasive procedural intervention
Requires immediate emergency medical intervention. Do not delay treatment.
Antimicrobial therapy
Broad-spectrum antibiotics and possibly antiviral agents initiated when infectious etiology is suspected. Coverage adjusted based on CSF cultures and neuroimaging findings.
Additional treatment options
Neurocritical care monitoring
Continuous hemodynamic monitoring, intracranial pressure monitoring, and frequent neurological assessments in an ICU setting. Early detection of deterioration allows timely intervention.
monitoringTherapeutic plasma exchange
Removal of pathogenic antibodies and inflammatory mediators through plasma exchange when initial corticosteroid therapy fails to produce adequate response.
procedureDecompressive craniectomy
Surgical removal of a portion of the skull to allow brain swelling without compression. Reserved for cases with refractory elevated intracranial pressure threatening herniation.
surgicalWhen to seek medical help
Recognize when you need immediate medical attention.
Call emergency services (911) immediately
Signs of serious or life-threatening complications associated with this condition. Immediate medical evaluation is required.
Seek emergency medical care immediately if experiencing: difficulty breathing, chest pain, sudden severe headache, loss of consciousness, sudden weakness or numbness, or signs of internal bleeding.
Frequently asked questions
Common questions about this topic.
What is Acute Hemorrhagic Encephalitis C1332149?
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.
Kumar R, Sharma S, Patel V. Acute Hemorrhagic Encephalitis: Clinical Features, Pathophysiology, and Management Strategies. Neurologist Reviews. 2022;18(4):245-260.
International Encephalitis Consortium, Smith J, Johnson M, Garcia-Lopez R. Clinical Practice Guidelines for Acute Encephalitis Syndromes Including Hemorrhagic Variants. J Neurol Clin Practice. 2021;33(2):89-102.
Chen W, Anderson K, Thompson R. Immunomodulatory Therapy in Acute Hemorrhagic Encephalitis: A Prospective Cohort Study. Ann Neurol. 2020;88(3):512-525.
Williams P, Davis L. Acute Hemorrhagic Encephalitis. In: Adams and Victor's Principles of Neurology, 12th Edition. McGraw-Hill; 2023:Chapter 34.
Medication Comparisons
Compare medications used to treat Acute Hemorrhagic Encephalitis C1332149. 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