Give the person ample time to respond, ask one idea at a time, and offer yes/no or two to three fixed choices. Do not finish sentences, reduce noise, and invite writing, gestures, drawing, or a communication board, as Mayo Clinic guidance recommends in its PPA communication handout. Primary progressive aphasia, or PPA, is a dementia syndrome in which gradual loss of language is the main feature. The National Institute on Deafness and Other Communication Disorders states that it worsens over time until the person loses ability to use language, described on its NIDCD aphasia page.
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
- What does valid consent require?
- Why does PPA complicate consent?
- How do you give time to express a choice?
- How do you support understanding and keep consent clear?
What does valid consent require?
Valid medical decision-making capacity requires four functional abilities. An American Bar Association and American Psychological Association review identifies them as understanding information, appreciating how it applies to oneself, reasoning about options, and expressing a stable choice, summarized in this capacity standards review.
A dementia or PPA diagnosis alone does not establish incapacity. A Psychiatric Times clinical review explains that capacity is presumed and decision-specific, so it must be judged for the particular treatment choice.
Why does PPA complicate consent?
PPA has three clinical variants: logopenic, nonfluent/agrammatic, and semantic. The Northwestern Mesulam Center notes that early on other thinking abilities stay relatively spared while language declines.
That gap matters because the person may still understand the decision but cannot say it quickly. The same Psychiatric Times review cautions that cognitive screening alone cannot judge capacity, though severe dementia sharply raises risk.
How do you give time to express a choice?
Pause after each question and wait longer than feels natural. Keep your language short, ask one thing, then offer a clear way to answer.
For example, replace "What do you want to do about the surgery?" with "Surgery can remove the problem. It has bleeding risk. Do you want surgery — yes or no?" Then wait, watch, and let the person point, write, or gesture.
- Give ample time and do not finish sentences
- Use one idea at a time in plain words
- Minimize noise and distractions
- Offer yes/no or two to three fixed choices
- Offer writing, gestures, drawing, or a board
How do you support understanding and keep consent clear?
Simplify forms, use visual or memory aids, and ask the person to explain back their understanding. Research recommendations in the journal Alzheimer's & Dementia advise re-explaining missed points and involving a familiar carer to help with explanation, detailed in these dementia consent recommendations.
Middlesex Health guidance advises starting advance-care and long-term-care talks early, while language allows fuller participation. Re-confirm consent at each encounter and write down the words, gestures, or aids the person used.
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