Which conditions should be considered in the diagnosis of vascular dementia?

Updated: Mar 26, 2018
  • Author: Kannayiram Alagiakrishnan, MD, MBBS, MPH, MHA; Chief Editor: Glen L Xiong, MD  more...
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Answer

Patients with HIV dementia have a positive result from an HIV test and cognitive changes with neurological signs.

Frontotemporal dementia is a type of cortical dementia characterized by behavioral and personality disorders more than cognitive issues. Three distinct types are seen: frontotemporal dementia, semantic dementia, and progressive nonfluent aphasia.

Patients with Pick disease have memory problems, personality changes, and deterioration of social skills. Onset is usually between the fifth and sixth decades of life. Upon physical examination, the patient has frontal release signs such as snout and grasp reflex.

Huntington disease is an autosomal dominant disease with an onset of cognitive changes as early as the third decade of life, with physical signs of choreoathetosis.

In Creutzfeldt-Jakob disease, onset is usually seen between the fourth and sixth decades of life, even though it can occur at any, and is associated with signs such as myoclonus, seizures, and ataxia. A rapid progression is typical.

Patients with Lewy body dementia have recurrent visual hallucinations, fluctuating cognitive impairment, and parkinsonism features. Also, the frequency of adverse reactions to antipsychotic medications is high.

In the case of cognitive symptoms secondary to depression, the onset is acute compared with the insidious onset in most types of dementia. The term pseudodementia has been used to describe the condition when cognitive symptoms are prominent. The current and more accurate name for this state is dementia of depression. Patients with depression usually report their cognitive difficulties, which is unusual for patients with dementia. Patients with depression tend to state that they do not know the answers to questions, and they appear to not try very hard during neuropsychological evaluations. Mood symptoms are prominent in patients with dementia of depression.


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