Symptoms of Multifocal Motor Neuropathy (MMN)
The symptoms of MMN can be easy to brush off at first. That’s because MMN appears gradually. It can also be mistaken or misdiagnosed for other conditions with similar symptoms.
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KNOW the key MMN symptoms
MMN is more than muscle weakness
Weak signals from neurons affected by MMN can lead to less frequent use of muscles. If muscles are not used enough they can shrink in size, a term called "muscle atrophy." Muscle atrophy only occurs late in the course of MMN. And there are management options that may help slow down the progression of MMN.
MMN can affect your ability to hold onto everyday items such as a tea kettle or pitcher.
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How does MMN affect daily life?
MMN may affect your daily life in one or more of the following ways due to limited dexterity:
- Dropping things you’re trying to hold
- Trouble gripping a fork, spoon, or knife while eating
- Difficulty turning a key in a lock
- Struggling to button a shirt or coat
- Difficulty tying shoelaces
- Trouble texting or scrolling on smartphones
If this sounds like you, it’s time to talk to your doctor about your symptoms. It may help to fill out the symptom tracker tool and bring a copy to your medical appointment.
These are not MMN symptoms
Unlike some other
(how to say it: noo-ruh-LAA-jih-kuhl)
Having to do with the nervous system or nerves. See more glossary terms disorders, MMN does not present with the following symptoms:
The reason MMN does not cause these symptoms is that it rarely affects the
(how to say it: SEN-sir-ee)
Having to do with the senses (touch, sight, hearing, taste, smell). See more glossary terms or cranial Cranial (how to say it: KRAY-nee-uhl) Definition:
Relating to the skull or head. See more glossary terms neurons in your body. Sensory neurons Sensory neurons (how to say it: SEN-sir-ee NUR-ahns) Definition:
Nerve cells that make you aware of pressure, temperature (eg, if something feels too hot or cold), and pain. See more glossary terms are the nerve cells that make you aware of pressure, heat, cold, or pain. So, when it comes to MMN, it helps to remember the expression "motor without sensory." That's because MMN usually only affects motor neurons Motor neurons (how to say it: MOH-tuhr NUR-ahns) Definition:
Nerve cells that connect to muscle tissue and control movement. See more glossary terms .
MMN and misdiagnosis
MMN can be difficult to diagnose. This is partly because MMN symptoms may get mistaken for more well-known conditions. For example, it may be mistaken for amyotrophic lateral sclerosis (ALS), also called Lou Gehrig's disease.
MMN vs other conditions that can look like MMN
A rare medical disorder in which nerves that control muscles are attacked by the body's immune system. See more glossary terms
- Muscle weakness in hands or feet
- Muscle cramping, twitching, or spasms
- Symptoms usually start in one hand or foot
- No sensory issues like numbness, tingling, or pain
- Blood tests report anti-GM1 antibodies
A rare disease affecting motor neurons that gets worse over time and that can be life-threatening. See more glossary terms
- Weakness in hands, legs, feet, or ankles
- Muscle cramps and/or twitches
- Slurred speech or trouble swallowing
- Tripping, falling, and difficulty walking
- Changes in behavior
A condition that occurs when the nerve that runs from the forearm into the palm of the hand becomes pressed or squeezed at the wrist. The dominant hand is usually affected first. See more glossary terms
- Numbness or tingling in fingers
- Sometimes pain in hand and wrist
- Fingers feel useless and swollen
A disorder of the nerves that causes weakness and loss of function in the legs and arms. Its symptoms get worse over time. See more glossary terms
- Tingling, weakness, and loss of feeling in arms and legs
- Loss of reflexes
- Loss of balance and difficulty walking
THAT MMN is manageable
Did you know there are treatment options that can help slow the progression of MMN in your body? If you are diagnosed with MMN, consider talking to your doctor about developing a management plan specifically for you and your needs.LEARN ABOUT