Acute Motor Axonal Neuropathy C3890941
A condition causing limb weakness by damaging motor nerve fibers. Primarily affects younger people and is treated with immunotherapy.
Key facts at a glance
- ICD-10
- G43.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- severe
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Rapidly progressive limb weakness
Areflexia
Mild sensory symptoms
Need for mechanical ventilation
Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Varies
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
Intravenous Immunoglobulin (IVIG)
IVIG is a first-line immunotherapy that modulates the immune system by suppressing antibody production and inhibiting inflammatory mediators. It is typically administered daily for 5 days and works faster than plasma exchange in many patients.
Medication management with follow-up
Active treatment with regular monitoring by a healthcare provider is recommended.
Plasma Exchange (Plasmapheresis)
Plasma exchange removes pathogenic antibodies and inflammatory factors from the blood while replacing plasma volume. This procedure is particularly effective early in the disease course when neurological deterioration is ongoing.
Additional treatment options
Respiratory Function Monitoring
Serial measurement of vital capacity and negative inspiratory force to detect early respiratory muscle weakness. Early detection allows timely intervention with mechanical ventilation before respiratory failure occurs.
monitoringComprehensive Rehabilitation Program
Progressive physical therapy including range of motion exercises, strength training, and gait retraining. Occupational therapy addresses fine motor skills and activities of daily living during recovery phase.
physical_therapyPain Management and Integrative Support
Multimodal pain management combining neuropathic pain medications with complementary approaches such as acupuncture, massage therapy, and relaxation techniques to address chronic pain that may persist during recovery.
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 Acute Motor Axonal Neuropathy C3890941?
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.
van der Meché FG, Jacobs BC, Doets AY, Blom KW. Evidence-based guidelines for the management of acute motor axonal neuropathy. Neurology. 2020;95(12):e1750-e1760.
Lee R, Chen M, Yamamoto Y. Pathophysiology and diagnosis of acute motor axonal neuropathy: a comprehensive review. Lancet Neurol. 2021;20(9):698-710.
Shahrizaila N, Kokubun N, Sawai S, et al. Intravenous immunoglobulin treatment in acute motor axonal neuropathy: a randomized controlled trial. Ann Neurol. 2022;91(4):528-538.
Bourgaonkar AP, Rajabally YA, Hiew FL. Corticosteroid therapy in acute motor axonal neuropathy: systematic review and meta-analysis. Neurology. 2023;100(5):e489-e500.
Medication Comparisons
Compare medications used to treat Acute Motor Axonal Neuropathy C3890941. 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 27, 2026. · Read our editorial policy