MDCalc

NINCDS-ADRDA Criteria for Alzheimer’s Disease

Diagnoses Alzheimer disease (AD), alternative to IWG-2 Criteria.

Required Criterion for Definite Alzheimer's Disease

Plus all criteria for Probable Alzheimer’s Disease

Criteria for Probable Alzheimer's Disease

Must have all 6

Criteria for Possible Alzheimer's Disease

Must have all 3

Diagnostic Result

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Advice
  • Always exclude reversible causes of cognitive decline (e.g., vitamin B12 deficiency, hypothyroidism, structural brain pathology).
  • Consider supplementing these criteria with modern diagnostic tools.
  • If the criteria support an AD diagnosis, consider:
    • Tailoring treatment based on disease stage and symptom severity, considering cholinesterase inhibitors, memantine, or newly available therapies as appropriate.
    • Reinforcing non-pharmacologic interventions (e.g., exercise, cognitive training, social engagement).
    • Offering caregiver support resources and discussing advanced care planning.
    • Monitoring disease progression and reassessing treatment plans periodically.
  • For complex cases or those requiring advanced imaging or biomarkers, consider referral to neurology or geriatric psychiatry.