Driving Safety and Financial Capacity in Early Dementia
A 78-year-old retired accountant with mild-to-moderate Alzheimer's disease (MMSE 21/30, CDR 1) lives with his wife. He still drives to the grocery store and church, but his wife reports he ran a red light and became lost once. He refuses to stop, saying his wife cannot drive at night. He also wants to change his will to leave the house to his son, while his daughter disputes this. He can state the value of his assets but cannot explain the risks of the change. He has hypertension and diabetes. He is pleasant and deflects questions about his memory.
1. How do you assess capacity for driving versus changing a will, and why does the distinction matter?
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Capacity is decision-specific. For driving, I would ask about crashes and near misses, observe attention, visuospatial function, and reaction time, and obtain collateral from his wife; MMSE 21 is a red flag but does not by itself determine fitness. I would refer for a formal driving evaluation and follow jurisdiction-specific reporting rules if he poses an imminent risk. For a will, he must understand the assets, the beneficiaries, the nature of the change, and the consequences, and must communicate a consistent choice without delusion or coercion. The distinction matters because dementia can impair complex financial reasoning while leaving some driving or simple choices intact-or vice versa. A global label of 'incompetent' is neither accurate nor helpful.
2. What is your approach to reducing driving risk while preserving alliance and autonomy?
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I would start with a nonjudgmental conversation: acknowledge that driving represents independence and that his wife also relies on him. I would share specific observations-the red light and getting lost-and ask him to explain them. I would offer a restricted-driving trial (daylight, familiar routes, no highway) only if a formal evaluation supports it; otherwise I would recommend stopping. I would involve occupational therapy for a driving evaluation and rehabilitation, arrange alternate transportation, and address his wife's night driving. If he continues to drive unsafely, I would document the counseling and follow state reporting requirements. I would not deceive him or hide the keys without a plan, because that can damage trust and may not be enforceable.
3. His daughter asks you to declare him 'incompetent' so she can take over finances. How do you respond?
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'Incompetent' is a legal conclusion, not a medical diagnosis. I can assess his capacity for specific financial decisions. He can state asset values but cannot explain risks, so he may need support with complex transactions. I would recommend a durable power of attorney if he has capacity to appoint one, or a conservatorship if not. I would also screen for coercion or financial exploitation, ask the daughter to bring a list of accounts, and suggest joint monitoring or bill-pay assistance. A neuropsychological evaluation can clarify strengths and deficits. The goal is supported decision-making with the least restrictive option, not a blanket removal of rights.