Frontal lobe dementia is associated with deterioration of the amygdala and frontal lobes and is also called frontotemporal lobar degeneration. Which dementia term does this describe?

• A. Lewy body dementia
• B. Frontal lobe dementia
• C. Alzheimer disease
• D. Vascular dementia

Answer: (B)

Frontal lobe and amygdala degeneration produces early changes in behavior and language, rather than memory being the first symptom. This pattern is classic for frontotemporal dementia, also called frontotemporal lobar degeneration. Among the options, the term that best fits is frontal lobe dementia, since it explicitly names the affected region. Lewy body dementia centers on Lewy bodies with fluctuations, visual hallucinations, and parkinsonism; Alzheimer disease is primarily memory-related with temporal-parietal involvement; vascular dementia results from cerebrovascular disease with stepwise decline.