Degenerative diseases are progressive and irreversible conditions that result in the deterioration of nerve cells and affect cognitive and motor functions. Examples include:

• Alzheimer’s Disease: A leading cause of dementia, characterized by memory loss, confusion, and difficulty with language and decision-making.
• Parkinson’s Disease: A movement disorder marked by tremors, stiffness, and impaired balance, often accompanied by mood and cognitive changes.
• Huntington’s Disease: A genetic condition causing progressive breakdown of nerve cells, leading to motor dysfunction, cognitive decline, and emotional disturbances.