Yes. A person with dementia can still make or update an advance directive if they have the capacity required for that specific decision. A dementia diagnosis alone does not remove decision-making capacity, according to the U.S.
Department of Justice Elder Justice Initiative. An advance directive records future health-care wishes and can name someone to decide on the person's behalf. Starting early gives the person more opportunity to understand the choices and express what matters to them.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- How is decision-making capacity assessed?
- What can an advance directive include?
- What should the person and family do now?
- What happens if capacity has already been lost?
- When should professional help be requested?
How is decision-making capacity assessed?
Capacity is specific to the decision at hand. Someone may retain capacity for one choice even when another choice has become too complex.
Choosing a trusted health-care agent and evaluating particular treatments are separate decisions. An assessment considers whether the person can understand relevant information, appreciate the consequences, reason through the options, and communicate a choice. Neither the dementia diagnosis nor a single cognitive screening score should decide the issue by itself.
What can an advance directive include?
A living will records preferences about medical treatment. A durable power of attorney for health care names a proxy, also called an agent, to act when the person can no longer communicate decisions, as the National Institute on Aging explains.
Naming an agent does not mean surrendering control immediately. The person with dementia continues making their own decisions while they have legal capacity; the agent cannot override those choices merely because an appointment exists.
What should the person and family do now?
Treat advance-care planning as a series of conversations, not just a form to sign. Include the person with dementia, family members, the intended proxy, and the health-care team while maximizing the person's participation. Practical next steps include:.
- Discuss the person's goals, values, and unacceptable outcomes.
- Choose a trusted proxy and confirm that person is willing to serve.
- Explain treatment preferences to the proxy rather than relying on the document alone.
- Ask for a decision-specific capacity assessment if there is uncertainty.
- Use the form and signing process required in the person's state.
What happens if capacity has already been lost?
If the person lacks the capacity required to create or revise a directive, family members cannot simply complete one in the person's name. They should look for an existing directive and contact any agent already appointed.
When no directive exists, state law determines who may make medical decisions. That person is commonly a spouse, parent, or adult child, according to the National Institute on Aging. Even then, the health-care team should adapt discussions to the person's abilities and involve them as much as possible.
When should professional help be requested?
A clinician can assess the person's ability to make the particular decision. However, state law controls the legal requirements for signing and using an advance directive, and those requirements vary, as the Alzheimer's Association notes.
Seek a state-specific legal review when capacity is disputed, relatives disagree, or there is uncertainty about whether a document can still be signed. Ask the clinician to document the capacity assessment and ask a qualified local lawyer or health-care organization which current state form and signing rules apply.
