8. Parkinson’s disease
Parkinson’s disease is an age-related neurodegenerative disorder that affects an area of the brain that’s called the substantia nigra.
Symptoms develop gradually over the years. In most cases, problems with movement are the first symptoms. Other Parkinson’s disease symptoms include limb stiffness, small handwriting or other writing changes, problems with walking or balance, slow movement (bradykinesia), voice changes, and tremors.
Treatment for Parkinson’s disease involves a combination of medications, therapies, and lifestyle changes. Physical therapy and medications can help reduce the muscle loss caused by the disorder.
9. ALS
Also known as Lou Gehrig’s disease, amyotrophic lateral sclerosis (ALS) is a progressive neurological disease that damages nerve cells. It often starts with muscle twitching and sudden leg weakness.
Other early symptoms include trouble swallowing, slurred speech, difficulty walking or performing daily tasks, and difficulty holding up your head. There’s currently no cure for ALS, but there are treatments that can help control complications and symptoms and improve quality of life.
