what is motor neurone disease caused by
Causes of motor neurone disease. Motor neurone disease occurs when specialist nerve cells (motor neurones) in the brain and spinal cord progressively lose their function.It's not clear why this happens. In most cases, a person with motor neurone disease won't have a family history of the condition. This is known as sporadic motor neurone disease.ossible causes of motor neurone disease. It's still unclear why the motor neurones begin to lose function. Most experts believe that it's a combination of interrelated factors that ultimately affect either the motor neurones or the nerve cells that support them.