Motor Neuron Diseases

 What causes motor neuron diseases?

The causes of sporadic, or noninherited, MNDs are not known, but environmental, toxic, viral, or genetic factors may be implicated. 

Sporadic cases may be triggered by exposure to radiation therapy, lightning strike or other electrical injury, cancers, or prolonged exposure to toxic drugs or environmental toxins. 

Scientists are investigating whether the body's autoimmune reaction to viruses such as the human immunodeficiency virus can trigger Motor Neuron Diseases MNDs. See research.

Who is at risk for Motor Neuron Disease?

MNDs occur in adults and children. 

The diseases are more common in men than in women. 

In adults, symptoms may appear after age 40. 

In children, particularly in inherited or familial forms of the disease, symptoms can be present at birth or appear before the child learns to walk.


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