‘Jargon’ speech comes at:-
**Core Concept**
Frontotemporal dementia (FTD) is a neurodegenerative disorder characterized by progressive degeneration of the frontal and temporal lobes, leading to changes in personality, behavior, and language. One of the hallmark features of FTD is 'jargon' speech, which is a type of neologistic jargon aphasia.
**Why the Correct Answer is Right**
Jargon speech in FTD is a result of the degeneration of the left frontal and temporal lobes, particularly the areas responsible for language processing, such as Broca's area and Wernicke's area. This degeneration leads to the formation of new words that are not recognized by the patient or others, resulting in the use of jargon. The underlying pathophysiology involves the disruption of the language network, which includes the left inferior frontal gyrus (Broca's area) and the left superior temporal gyrus (Wernicke's area).
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specifically relate to the type of speech pathology seen in FTD.
**Option B:** This option is incorrect because it refers to a different type of speech disorder, characterized by difficulty with articulation and pronunciation.
**Option C:** This option is incorrect because it is a type of dementia that primarily affects memory, not language.
**Clinical Pearl / High-Yield Fact**
In FTD, jargon speech is often accompanied by other language abnormalities, such as echolalia (repetition of words or phrases) and neologisms (new words with no meaning).
**Correct Answer:** C.