Degenerative diseases often cause damage to a person’s body overtime. They may cause certain cells to lose their function, slow down regeneration or die out. As a result, the brain can’t communicate well with the body.
Motor disorders and muscle weakness are common effects. There are many varieties to these diseases, depending on how it affects the body:
Parkinson’s Disease
Parkinson’s Disease is a disorder that affects the brain’s basal ganglia, which handles movement. The nerve cells in this area of the brain become impaired. They also don’t produce enough dopamine, which is essential to brain.
ALS (Amyotrophic Lateral Sclerosis)
Also known as Lou Gehrig’s Disease, ALS is a progressive disease that affects the neurons in the spinal cord. The motor neurons become damaged and they stop sending messages to the muscles in the body.
MS (Multiple Sclerosis)
Multiple sclerosis is when the immune system attacks the myelin sheath which protects the nerve cells. Without this substance, the neurons in the brain and spinal cord may not fire messages correctly. This results in muscle weakness or lack of control.
How do neurodegenerative diseases affect speech?
Many of these neurodegenerative diseases affect the body as a whole. They are known to affect gross motor skills such as walking. However, it also affects the muscles associated with speech and swallowing (lips, tongue, soft palate and vocal cords).
Increasing communication issues make daily activities difficult. Speech-language pathology addresses these challenging aspects of communication (via speech therapy) and in eating activities (via swallowing therapy).