Multifocal Motor Neuropathy: IVIG as First-Line Treatment
MMN causes progressive weakness that's often mistaken for other conditions. IVIG is the treatment with the strongest evidence behind it.
What is multifocal motor neuropathy?
Multifocal motor neuropathy (MMN) is a rare autoimmune condition affecting the peripheral nerves that control movement, causing slowly progressive weakness, usually starting in the hands and arms and typically affecting one side more than the other. Sensation is usually preserved, which helps distinguish it from other nerve conditions.
Because MMN can resemble other neuromuscular conditions, including ALS in its early stages, an accurate diagnosis through nerve conduction studies and blood work matters a great deal for getting the right treatment.
How infusion therapy helps
IVIG is the first-line, best-established treatment for MMN, and unlike many autoimmune nerve conditions, MMN generally does not respond well to steroids, making IVIG especially important to get right.
Most patients need ongoing maintenance infusions, since the benefit of IVIG tends to wear off over time without continued treatment, with the interval between infusions adjusted based on individual response.
Diagnosed with multifocal motor neuropathy?
Our physician-led team coordinates ongoing IVIG therapy with your neurologist.
Call (551) 336-5580This article is for general educational purposes and is not a substitute for medical advice. Treatment decisions should always be made with your physician based on your individual diagnosis and health history.

