Degenerative disease?

Degenerative disease is a medical condition in which the function or structure of a particular organ or tissue deteriorates over time. This can result in a gradual decline in physical or mental abilities, and can ultimately lead to disability or death. Examples of degenerative diseases include Alzheimer's disease, Parkinson's disease, osteoarthritis, and multiple sclerosis. Treatment for degenerative diseases often focuses on managing symptoms and slowing the progression of the disease.