Real Life Examples of Major Neurocognitive Disorder: Case Studies

🧠 Quick Study Guide

• 📅 Diagnostic Criteria: Major Neurocognitive Disorder (NCD) requires significant cognitive decline from a previous level of performance in one or more cognitive domains (e.g., memory, language, executive function).
• ⚠️ Impairment: The cognitive deficits interfere with independence in everyday activities (i.e., requiring assistance with complex instrumental activities of daily living such as paying bills or managing medications).
• 📝 Etiology: Specify the etiological subtypes (e.g., Alzheimer's disease, frontotemporal lobar degeneration, Lewy body disease, vascular disease, traumatic brain injury, HIV infection, prion disease, Parkinson's disease, Huntington's disease).
• 🔬 Alzheimer's Disease: Gradual onset and progression of cognitive impairment. Probable Alzheimer's disease is diagnosed if there is evidence of a causative genetic mutation or if all three of the following are present: clear evidence of decline in memory and learning, steadily progressive cognitive decline, and no evidence of mixed etiology.
• 🩸 Vascular NCD: Cognitive decline resulting from significant cerebrovascular disease. Diagnosed based on a history of stroke or the presence of significant cerebrovascular disease on neuroimaging.
• 💡 Lewy Body Disease: Fluctuating cognition with pronounced variations in attention and alertness, recurrent visual hallucinations, and parkinsonian motor features.
• 🧮 Frontotemporal Lobar Degeneration: Prominent decline in social cognition and/or executive abilities. Behavioral variant presents with disinhibition, apathy, loss of empathy, and compulsive behaviors. Language variant includes decline in language ability, in the form of speech production, word finding, object naming, grammar, or word comprehension.

🧪 Practice Quiz

1. Question 1: A 75-year-old man presents with gradual memory loss and difficulty with language. Neuroimaging reveals significant atrophy in the temporal lobes. Which is the most likely diagnosis?
   1. A) Vascular Neurocognitive Disorder
   2. B) Major Neurocognitive Disorder due to Alzheimer's Disease
   3. C) Frontotemporal Lobar Degeneration
   4. D) Major Neurocognitive Disorder with Lewy Bodies
2. Question 2: A 68-year-old woman experiences sudden cognitive decline following a series of minor strokes. Her symptoms include impaired judgment and difficulty planning. What is the most probable diagnosis?
   1. A) Major Neurocognitive Disorder due to Alzheimer's Disease
   2. B) Major Neurocognitive Disorder due to Parkinson's Disease
   3. C) Vascular Neurocognitive Disorder
   4. D) Frontotemporal Lobar Degeneration
3. Question 3: A 62-year-old man shows progressive changes in personality, becoming disinhibited and apathetic. Neuropsychological testing indicates impaired social cognition but relatively intact memory. Which condition is most likely?
   1. A) Major Neurocognitive Disorder due to Alzheimer's Disease
   2. B) Frontotemporal Lobar Degeneration
   3. C) Major Neurocognitive Disorder with Lewy Bodies
   4. D) Vascular Neurocognitive Disorder
4. Question 4: An 80-year-old woman experiences fluctuating cognitive abilities, visual hallucinations, and motor symptoms resembling Parkinson's disease. What is the most likely diagnosis?
   1. A) Major Neurocognitive Disorder due to Alzheimer's Disease
   2. B) Vascular Neurocognitive Disorder
   3. C) Major Neurocognitive Disorder with Lewy Bodies
   4. D) Frontotemporal Lobar Degeneration
5. Question 5: A 70-year-old man with a history of heavy alcohol use presents with significant memory impairment and confabulation. Which of the following is the most likely cause of his neurocognitive disorder?
   1. A) Alzheimer's Disease
   2. B) Vascular Neurocognitive Disorder
   3. C) Huntington’s Disease
   4. D) Alcohol-related Neurocognitive Disorder
6. Question 6: A 55-year-old patient exhibits rapid cognitive decline, muscle stiffness, and involuntary movements. Family history reveals similar symptoms in previous generations. What is the likely diagnosis?
   1. A) Major Neurocognitive Disorder due to Alzheimer's Disease
   2. B) Huntington’s Disease
   3. C) Major Neurocognitive Disorder with Lewy Bodies
   4. D) Frontotemporal Lobar Degeneration
7. Question 7: A 69-year-old woman presents with progressive aphasia, characterized by difficulty in speech production and comprehension, despite relatively preserved memory and executive functions. Which condition is most likely?
   1. A) Major Neurocognitive Disorder due to Alzheimer's Disease
   2. B) Frontotemporal Lobar Degeneration (Language Variant)
   3. C) Major Neurocognitive Disorder with Lewy Bodies
   4. D) Vascular Neurocognitive Disorder