Which term refers to a progressive incurable disease that causes tangled nerve fibers and protein deposits to form in the brain, eventually causing dementia?

• A. Aphasia
• B. Alzheimer's
• C. Ambulation
• D. Angina

Answer: (B)

Alzheimer's disease is a progressive, incurable brain disorder in which tangled nerve fibers and protein deposits form, disrupting communication between neurons. Over time this damage widens to cause widespread brain cell loss, leading to dementia that progressively affects memory, thinking, and daily functioning. This description specifically matches Alzheimer's because it centers on a chronic neurodegenerative process that culminates in cognitive decline.

Aphasia, by contrast, is a language impairment that can accompany brain injury or stroke and isn’t defined by the widespread brain changes of dementia. Ambulation simply refers to the ability to walk, which is not about brain plaques and tangles or progressive dementia. Angina is chest pain from heart disease, unrelated to brain degeneration. In care settings, recognizing the distinction helps you anticipate the kinds of care needs that arise with Alzheimer's, such as safety, routine, and supportive communication.