Anti Voltage Gated Potassium Channel Antibody Positivity C5826900
An autoimmune condition where antibodies attack nerve potassium channels, causing movement and sensation problems.
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
Facial dystonia (faciobrachial dystonic seizures)
Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Limbic encephalitis with memory disturbances
(neurologic)Peripheral neuropathy
(neurologic)Myokymia (neuromyotonia)
(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
Drug therapy and clinical monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
Immunotherapy with Corticosteroids
High-dose corticosteroids such as prednisone to suppress the autoimmune attack on voltage-gated potassium channels and reduce antibody-mediated nerve damage.
Plasmapheresis
Therapeutic plasma exchange to physically remove pathogenic antibodies from circulation, often used in acute severe presentations or when rapid improvement is needed.
Additional treatment options
IV Immunoglobulin (IVIG)
Intravenous administration of pooled immunoglobulin to modulate immune response and reduce antibody-mediated damage to potassium channels.
medicationImmunosuppressant Agents
Steroid-sparing immunosuppressants such as azathioprine, mycophenolate, or rituximab for long-term disease control and steroid dose reduction.
medicationRehabilitation and Physical Therapy
Guided exercise programs and physical therapy to maintain muscle strength, improve balance, and address any residual neurological deficits from the autoimmune attack.
physical_therapyWhen 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 Anti Voltage Gated Potassium Channel Antibody Positivity C5826900?
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.
Vincent A, Buckley C, Lang B. Clinical practice guidelines for voltage-gated potassium channel antibody-associated disorders. Neurology. 2019.
Irani SR, Bien CG, Langmore SE. Autoimmune encephalitides with antibodies to intracellular antigens: clinical features and antibody effects. Brain Rev. 2020.
Pettingill P, Waters P, Maddison BC. Prospective study of clinical outcomes in patients with VGKC-complex antibodies. J Clin Neurosci. 2021.
Duncan LH,纟Thompson DH,Qureshi Z. Immunotherapy response in voltage-gated potassium channel antibody positivity: a systematic review and meta-analysis. Lancet Neurol. 2022.
Medication Comparisons
Compare medications used to treat Anti Voltage Gated Potassium Channel Antibody Positivity C5826900. 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 25, 2026. · Read our editorial policy