Dementia is a general term used to describe a decline in cognitive function that affects daily living. It can impact memory, thinking, and social abilities, making it difficult for individuals to perform everyday tasks. Various types of dementia exist, with Alzheimer's disease being the most common. The condition is often progressive, meaning symptoms worsen over time. While age is a significant risk factor, dementia can also result from other medical conditions or injuries. Early diagnosis and intervention can help manage symptoms and improve quality of life for those affected and their families.