Swallowing: Swallowing & Communication in Motor Neuron Disease Download PDF, 7.70MB, PDF Motor Neuron Disease (MND) belongs to a group of neurological disease resulted by the progressive deterioration of nerves (motor neurons) in the brain and spinal cord that control the muscles of the body. As a result, the muscles weaken, stiffen and deteriorate. Symptoms of MND vary from person to person, but in general, it can affect our breathing, eating, drinking, speaking, and movement. The main types of MND include:Amyotrophic Lateral Sclerosis (ALS)Progressive Bulbar Palsy (PBP)Progressive Muscular Atrophy (PMA)Primary Lateral Sclerosis (PLS) [Please download the PDF file if you are unable to view the image below.]