Cognitive impairment is a decline in cognitive abilities, such as memory, attention, and problem-solving, that is severe enough to interfere with everyday functioning.

Dementia is a progressive decline in cognitive abilities, such as memory, attention, and problem-solving, that is severe enough to interfere with everyday functioning.

Alzheimer's disease is the most common type of dementia, accounting for 60-80% of cases.

The signs and symptoms of dementia can vary depending on the type of dementia, but common symptoms include memory loss, difficulty with language, problems with problem-solving and decision-making, and changes in personality and behavior.

The risk factors for dementia include age, family history of dementia, head injury, heart disease, and other medical conditions.

Dementia is diagnosed based on a physical exam, blood tests, brain imaging, and cognitive testing.

There is currently no cure for dementia, but there are medications that can slow the progression of the disease and treatments that can help manage the symptoms.

There is no sure way to prevent dementia, but there are things that can be done to reduce the risk, such as exercising regularly, eating a healthy diet, getting enough sleep, and managing stress.

Caregivers can help people with dementia by being patient and understanding, providing a safe and supportive environment, helping with activities of daily living, encouraging social interaction, and providing emotional support.

There are a number of resources available to help people with dementia and their caregivers, including support groups, educational programs, financial assistance, and respite care.

Alzheimer's disease is caused by a buildup of amyloid plaques and tau tangles in the brain, while vascular dementia is caused by damage to the blood vessels in the brain. Alzheimer's disease is more common than vascular dementia, but vascular dementia is more likely to cause strokes.

Lewy body dementia is caused by a buildup of Lewy bodies in the brain, while frontotemporal dementia is caused by a buildup of tau protein in the brain. Lewy body dementia is more common than frontotemporal dementia, but frontotemporal dementia is more likely to cause changes in personality and behavior.

People with dementia face a number of challenges, including memory loss, difficulty with language, problems with problem-solving and decision-making, and changes in personality and behavior.

Caregivers of people with dementia face a number of challenges, including emotional stress, financial burden, physical strain, and social isolation.