Responsibility for a person with dementia typically falls on whoever holds legal authority to make decisions on their behalf, and in most cases, that person is a family member named in a power of attorney document. When no such document exists, responsibility follows a legal hierarchy that starts with a spouse, moves to adult children, and can ultimately land with a court-appointed guardian or the state itself. The answer depends on what legal planning was done before the person lost the ability to make their own decisions.
Power of Attorney: The First Line of Responsibility
The most common way responsibility transfers is through a document called a durable power of attorney. “Durable” means the document stays valid even after the person can no longer make decisions for themselves. There are two types that matter here: one for finances and one for health care.
A financial power of attorney authorizes an agent to manage the person’s income, pay bills, handle investments, and oversee assets. The agent is legally required to act in the person’s best interest and according to their stated wishes. A health care power of attorney (sometimes called an advance directive) authorizes someone to choose doctors, approve or refuse treatments, select care settings, and in late-stage dementia, make end-of-life decisions like whether to use a feeding tube or issue do-not-resuscitate instructions.
These documents only work if they’re set up while the person still has the mental capacity to sign them. Once dementia has progressed to the point where someone can’t understand what they’re agreeing to, it’s too late. This is why early planning matters so much. Without a power of attorney in place, families are left with slower, more expensive, and more stressful legal options.
What Happens When There’s No Power of Attorney
If no power of attorney exists and the person can no longer make their own decisions, the most common path is court-appointed guardianship (called conservatorship in some states). A court can appoint a guardian when three conditions are met: the person cannot make critical decisions about their personal or financial affairs, no alternative legal arrangements are in place, and without court intervention the person or their resources would face substantial harm.
Before appointing a guardian, the court requires medical and psychological evidence about the individual’s decision-making ability. A family member usually petitions for guardianship, but when no family is available or the family can’t agree on a care plan, the court may appoint a professional guardian or a public agency. Guardianship is a significant legal step. It removes rights from the person with dementia and places them with someone else, which is why courts treat it as a last resort.
In emergencies, courts can appoint a temporary guardian much faster than the standard process. Emergency guardianship addresses situations where failing to act immediately would cause irreparable harm. An emergency guardian for personal care decisions can be appointed for up to 72 hours, with extensions of up to 20 days if the crisis continues. An emergency guardian over financial matters can serve for up to 30 days. This option exists strictly for genuine emergencies and can’t be used simply to speed up a routine guardianship petition.
The Default Surrogate Hierarchy
For medical decisions specifically, there’s a practical reality that plays out in hospitals and care facilities every day. When no power of attorney or guardian is in place, health care professionals rely on a default surrogate decision maker. Most states define a priority order by statute:
- Spouse or domestic partner
- Adult child
- Parent
- Sibling
- Other relatives
A growing number of states also allow a close friend to serve as a default surrogate. This hierarchy only applies to medical decisions, not financial ones. If no one in this chain is available or willing, the situation typically escalates to guardianship proceedings or state intervention.
How Doctors Determine Who Decides
A dementia diagnosis alone doesn’t automatically strip someone of their right to make decisions. Capacity is assessed on a decision-by-decision basis. A person with mild dementia might be perfectly capable of choosing where to live but unable to manage complex financial transactions.
Clinicians evaluate four abilities: whether the person understands the relevant information, whether they can express a clear choice, whether they appreciate how the situation applies to their own life, and whether they can reason through the options and consequences. This is done through a direct interview with open-ended questions, sometimes supported by formal cognitive testing. A person’s capacity can be rated as adequate, inadequate, or marginal, and the assessment should be consistent over time, typically rechecked after 24 hours.
This matters because until a clinician determines that capacity is lost for a specific decision, the person with dementia retains the legal right to make that decision themselves. Responsibility only shifts to someone else when it does.
When the State Steps In
Adult Protective Services can intervene when a person with dementia is being abused, neglected, or financially exploited. State agencies can provide protective services to adults who are 60 or older, or to any adult 18 or older who is incapacitated. An “emergency” under these laws means the person is living in conditions that present a clear and substantial risk of death or serious physical harm, or has recently been subjected to violence, threats, or financial exploitation.
If the person lacks the capacity to consent to receiving help, a local department can petition the court to order protective services involuntarily. The court must find that the person is incapacitated, an emergency exists, the person can’t consent to services, and the department’s investigation substantially supports the petition. This is the mechanism by which the government takes on direct responsibility for someone with dementia when no one else is doing so adequately.
Filial Responsibility Laws
Twenty-seven states still have colonial-era “filial responsibility” laws on the books that can legally require adult children to pay for an indigent parent’s care. In practice, these laws are rarely enforced, but they do exist. Several states, including Idaho, Montana, Iowa, and Utah, have recently repealed theirs. Others have significant limitations: Arkansas can only require payment for adult mental care, Connecticut’s law only applies if the parent is younger than 65, and Nevada’s requires a written agreement to pay before any liability kicks in.
While enforcement is uncommon, nursing homes have occasionally used these laws to pursue adult children for unpaid care costs. If you live in a state with an active filial responsibility statute, it’s worth understanding your potential exposure, especially if a parent with dementia has limited resources.
Care Facility Obligations
When a person with dementia lives in an assisted living or skilled nursing facility, the facility takes on a legal duty of care. Federal law prohibits unequal treatment of people with dementia in these settings. Beyond that, state regulations vary considerably. Thirty-eight states require specialized dementia training for assisted living staff. Twenty-six states require criminal background checks. Ten states mandate secure perimeters with locked doors and gates for dementia residents.
Recommended standards call for at least 30 hours of dementia-specific training for staff at hire, covering behavior management, communication skills, medication management, and the stages of the disease, plus 8 hours of annual continuing education. At minimum, experts recommend one staff member with dementia training for every 10 residents with dementia at all times, along with a registered nurse on duty around the clock. Thirteen states, including Utah and Hawaii, have no policies regulating the use of chemical restraints in assisted living, which is a gap that advocacy groups have repeatedly flagged.
Driving and Public Safety Reporting
One responsibility that catches many families off guard involves driving. The vast majority of states require clinicians to report dementia diagnoses to the Department of Motor Vehicles. Only a handful of states place the reporting burden on the driver instead: California requires immediate self-reporting, Delaware gives a one-week window, and Pennsylvania allows 10 days. In clinician-reporting states, the doctor handles notification, but families often face the practical challenge of taking the keys away before a formal license revocation comes through.