Amyotrophic lateral sclerosis (ALS)
Motor neurone disease is a rare condition where parts of the nervous system become damaged. This causes progressive weakness, usually with muscle wasting.
The symptoms of motor neurone disease can be varied to begin with, before getting progressively more widespread.
Motor neurone disease occurs when specialist nerve cells in the brain and spinal cord called motor neurones progressively lose their function. It's not clear why this happens.
See your GP if you experience the initial symptoms of motor neurone disease, such as a weakened grip or weakness in your shoulder, ankle or hip.
There's no cure for motor neurone disease, but treatment can help relieve symptoms and help to slow down the condition's progression.