Which of the following is the irreversible, progressive brain disorder that slowly destroys memory and thinking skills and, eventually, the ability to carry out the simplest tasks?

Alzheimer's disease is the irreversible, progressive brain disorder that slowly destroys memory, thinking and finally the ability to do simple tasks.

It is the commonest cause of dementia and involves loss of neurons with amyloid plaques and tau tangles.

It typically begins with recent-memory loss and advances to disorientation and loss of self-care.

Dyslexia is a specific reading learning disability, not a progressive degenerative disorder.

Parkinson's disease is a movement disorder marked by tremor and rigidity, not primarily memory destruction.

Alois Alzheimer first described the disease in 1906, giving it his name.