Major Neurocognitive Disorder (Dementia): A Guide for Counselors

Understanding Major Neurocognitive Disorder

Major Neurocognitive Disorder (NCD), the DSM-5 term encompassing what was previously called dementia, represents a significant decline from a previous level of cognitive functioning in one or more cognitive domains. As the population ages, counselors increasingly work with individuals affected by neurocognitive decline, their families, and their caregivers. Understanding this diagnostic category is important for both clinical practice and exam preparation.

DSM-5-TR Diagnostic Criteria

1. Evidence of significant cognitive decline from a previous level of performance in one or more cognitive domains (complex attention, executive function, learning and memory, language, perceptual-motor, or social cognition) based on:
   • Concern of the individual, a knowledgeable informant, or the clinician that there has been a significant decline
   • A substantial impairment in cognitive performance, preferably documented by standardized neuropsychological testing or another quantified clinical assessment
2. The cognitive deficits interfere with independence in everyday activities
3. The cognitive deficits do not occur exclusively in the context of a delirium
4. The cognitive deficits are not better explained by another mental disorder

Major vs. Mild Neurocognitive Disorder

The distinction between major and mild NCD rests on severity and functional impact. In mild NCD, decline is modest and does not interfere with independence in daily activities (though greater effort or compensatory strategies may be needed). In major NCD, decline is significant and interferes with independence, requiring assistance with instrumental activities of daily living.

Common Subtypes

Alzheimer's Disease

The most common cause of major NCD, accounting for 60 to 80% of cases. Characterized by gradual onset and progressive decline, with early impairment in learning and memory. Pathologically associated with amyloid plaques and neurofibrillary tangles.

Vascular Neurocognitive Disorder

The second most common cause, resulting from cerebrovascular disease. Onset may be abrupt or stepwise following cerebrovascular events. Complex attention and executive function are often disproportionately affected relative to memory.

Lewy Body Disease

Characterized by fluctuating cognition, visual hallucinations, and parkinsonian motor features. REM sleep behavior disorder is a common associated feature.

Frontotemporal Lobar Degeneration

Presents with prominent behavioral changes (disinhibition, apathy, loss of empathy) or language impairment, with relative preservation of memory in early stages. Onset is typically earlier than Alzheimer's disease.

The Counselor's Role

Counselors can play several important roles in neurocognitive disorder care. In the early stages, counselors can provide supportive therapy to help individuals process the diagnosis, address grief and loss, and plan for the future. Throughout the disease course, counselors can work with family members and caregivers to manage the emotional burden of caregiving, address caregiver burnout, facilitate family communication about care decisions, and provide psychoeducation about disease progression.

Interventions for Individuals with Mild to Moderate NCD

• Cognitive stimulation therapy and reminiscence therapy
• Behavioral activation and pleasant events scheduling
• Supportive psychotherapy adapted for cognitive limitations
• Anxiety and depression management (common comorbidities)
• Assistance with advance care planning

Caregiver Interventions

• Psychoeducation about the disease process and behavioral management
• Stress management and self-care strategies
• Support group referrals
• Respite care planning
• Grief counseling for anticipatory loss

Exam Tips

• Major NCD replaces the term "dementia" in the DSM-5; know the updated terminology
• The distinction between major and mild NCD is based on severity and impact on independence
• Alzheimer's is the most common cause; know the characteristic early memory impairment
• Delirium must be ruled out (acute onset, fluctuating consciousness, often reversible)
• Frontotemporal dementia presents with behavioral/personality changes rather than memory loss initially
• Counselors primarily work with caregivers and families rather than providing cognitive rehabilitation