Which term denotes the serious loss of mental abilities such as thinking, memory, reasoning, and communicating?

• A. Dehydration
• B. Culture
• C. Dementia
• D. Death and dying

Answer: (C)

Dementia is the term used for a serious loss of mental abilities such as thinking, memory, reasoning, and communicating. It’s a syndrome caused by diseases of the brain that gradually impair cognitive function and daily functioning, and it is not simply a normal part of aging. For a CNA, recognizing dementia helps guide safe, respectful care—maintaining a predictable routine, using clear, simple communication, and supporting memory with reminders and familiar environments.

Dehydration can cause confusion, but it’s a reversible condition related to fluid balance, not a chronic cognitive disorder. Culture refers to shared beliefs and practices and does not describe cognitive decline. Death and dying concerns end-of-life topics and also do not denote a cognitive-impairment condition.