This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Organic Mental Disorders, Subject name: Psychiatry
True regarding FTD are all except: 
Select and explain. 
A. Semantic dementia, B. Nonfluent aphasia, C. Apathetic, disinhibited personality, D. Rapid onset static course
D: Rapid onset static course
Answer: D: Rapid onset static course 
Explanation: The frontotemporal dementias have a progressive course and not static course. It is usually of early onset ( 45 -65 yrs) Patient presents with behavioral symptoms with relative preservation of memory. It has three distinctive clinical presentations- Frontal variant Semantic dementia Progressive Non fluent aphasia