Try to get an accurate picture of your parents’ ability to care for themselves.  Before you can seek help, you should understand what's needed.  (Clearly, every situation is different:  some people will have one parent with health issues; some people with have two.  So any references we make to "parent" or "parents" should be taken to mean either situation.)

These questions will help get you started:

• Determine the mental state of your parents.  Are they cogent?  Are there any problems with communication or comprehension?  If you are finding a lot of delusional behavior and disconnected talk, you need professional help right away.
• Are your parents eating regularly?  Are they losing weight?  Who is preparing their meals?  Check the refrigerator to see if it’s empty or full, and determine if the food is fresh or no longer edible.
• Are your parents taking their medications?
• Does the house look like it’s being kept up?  Is it clean?  Is there evidence of regular maintenance?
• Can your parents bathe and dress without assistance?
• Are they incontinent?
• Are the bills being paid?  Check for piles of unopened mail.
• Can your parents get around?  Can they drive?  Can they walk?  If you suspect a problem, check for any bruising or stray burn marks on their clothes, or any evidence that might indicate carelessness or dangerous behavior.