What is Alzheimer's Disease?

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As per a recent study, rare medical accidents can lead to the transmission of Alzheimer's from one human to another.

About Alzheimer's Disease

  • It is a brain condition that causes a progressive decline in memory, thinking, learning, and organizing skills.
  • It is the most common type of dementia, accounting for 60-80% of all dementia cases.
  • It involves parts of the brain that control thought, memory, and language.
  • It can seriously affect a person’s ability to carry out daily activities.
  • The condition usually affects people aged 65 years and over, with only 10% of cases occurring in people younger than this.
  • Cause: The exact cause of Alzheimer's disease is not fully understood, but it is believed to be influenced by a combination of genetic, environmental, and lifestyle factors.
  • Symptoms:
    • The early signs of the disease include forgetting recent events or conversations.
    • Over time, it progresses to serious memory problems and loss of the ability to perform everyday tasks.
  • Treatment: There’s no cure for Alzheimer’s, but certain medications and therapies can help manage symptoms temporarily.

What is Dementia?

  • Dementia is not a specific disease but is rather a general term for the impaired ability to remember, think, or make decisions that interferes with doing everyday activities.
  • Alzheimer’s disease is the most common type of dementia. However, there are several other types of dementia, each with its own underlying causes. Some of the common types of dementia include: Vascular Dementia, Lewy Body Dementia, Frontotemporal Dementia, and Mixed Dementia.
  • Though dementia mostly affects older adults, it is not a part of normal aging.

Q1) What is Vascular Dementia?

Vascular dementia is the second most common form of dementia after Alzheimer's disease. It's caused when decreased blood flow damages brain tissue. Blood flow to brain tissue may be reduced by a partial blockage or completely blocked by a blood clot. Without proper blood flow, needed oxygen and nutrients aren’t delivered and brain tissue is damaged.

Source: Can Alzheimer’s disease spread from human to human?