05/29/2026
In Illinois, what do you do if your elder parent has lost their mental ability to handle their day-to-day affairs?
In Illinois, the usual next step is to assess whether your parent still has legal capacity; if they do not, the practical remedy is usually a court guardianship over their person, estate, or both. If there is evidence of self-neglect, abuse, or exploitation, you can also contact Adult Protective Services at 1-866-800-1409.
What to do first
Start by getting a medical evaluation from your parents’ doctor or another qualified clinician to document whether they can understand and manage decisions about finances, health care, and daily living. Illinois guidance and practitioner sources note that guardianship is typically used when the person cannot make or communicate responsible decisions about personal care or property.
Check existing documents
Look for a valid financial power of attorney, health care power of attorney, or trust. If your parent signed those documents while they still had capacity, the named agent may already have authority to help without court intervention. If they no longer have capacity and no valid documents exist, guardianship is often the court route.
Guardianship process
If guardianship is needed, a petition is filed in the probate court in the county where your parent lives, with medical evidence and notice to required family members. The judge then decides whether your parent is legally disabled/incapacitated and whether a guardian should be appointed.
If there is risk
If your parent cannot meet basic needs or is being taken advantage of, report the situation to Illinois Adult Protective Services at 1-866-800-1409. Illinois also says self-neglect includes a senior’s inability to provide food, clothing, shelter, healthcare, and other essential self-care because of physical or mental problems.
Practical next steps
Schedule a doctor’s evaluation.
Gather bank, medication, and mail records showing the problem.
Check for powers of attorney or trusts.
Talk to an Illinois elder law or probate attorney about guardianship.
Call Adult Protective Services if there is immediate danger, neglect, or exploitation.
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