Alzheimer stages chart

An Alzheimer stages chart lines up the different ways doctors describe the disease so you can see how they fit together. The most common systems are the simple three-stage model (early, middle, late), the seven-stage Global Deterioration Scale (GDS), the closely related Functional Assessment Staging Test (FAST) and the Clinical Dementia Rating (CDR). The charts below place them side by side and add a practical view of care needs at each point.

Charts are handy for conversations with doctors, care facilities and relatives, especially when different professionals use different terms. Just remember that a chart shows a typical pattern. Real people often fall between rows or show signs from neighboring stages, and only a clinician who knows the person can assign a stage with confidence.

Chart 1: How the Staging Systems Compare

This master chart matches the main scales row by row. Each row describes what is typically true of the person at that point.

What Each Scale Measures

Three-stage model

Used by the Alzheimer’s Association and in most everyday conversations, it groups the disease into early, middle and late stages based on independence. It is easy to remember and works well for planning.

Global Deterioration Scale (GDS)

Developed by Dr. Barry Reisberg and colleagues, the GDS offers seven steps focused mainly on thinking and memory. Care facilities and caregiver resources often use it because it gives more detail.

Functional Assessment Staging Test (FAST)

FAST follows the same seven-stage structure but focuses on daily functioning, such as dressing, bathing, continence, speech and mobility. It splits stages 6 and 7 into substages, which makes it useful in late-stage and hospice care.

Clinical Dementia Rating (CDR)

The CDR is common in research and memory clinics. A clinician rates six areas, memory, orientation, judgment and problem solving, community affairs, home and hobbies, and personal care, to arrive at an overall score from 0 (normal) to 3 (severe).

Chart 2: Care Needs by Stage

Families often care less about the name of a stage than about what kind of help is needed. This second chart translates stages into everyday support.

How to Use a Stages Chart Wisely

A chart is most helpful as a shared reference point. Some tips:

• Bring it to appointments. Ask the doctor which scale they use and where they would place your loved one.
• Track changes over time. Jot down examples of what the person can and cannot do each month; patterns are easier to see on paper.
• Use it to plan, not to predict. Charts do not tell you exactly how long a stage will last, which varies widely.
• Share it with the whole family. When everyone uses the same chart, it is easier to agree on what help is needed and who will provide it.
• Watch for sudden shifts. A jump of several rows in a short time is not typical and may signal infection, delirium, medication effects or another illness.

Limits of Any Chart

Alzheimer’s does not always follow the textbook. Some people have rarer forms that begin with vision or language problems. Others have mixed dementia, with blood vessel damage or Lewy bodies adding their own symptoms. Hearing loss, depression and other health conditions can make someone seem further along than they are. That is why a chart is a starting point for conversation, not a diagnosis.

Charts also cannot capture the person behind the stage. Two people in stage 5 may have very different personalities, interests, family support and health conditions, and they may need very different kinds of help. Use the rows as a map, but let the individual, their history, their preferences and what still brings them joy, guide the actual care plan. A stage describes the disease; it never fully describes the person.

Frequently Asked Questions

Which chart do doctors use most?

It depends on the setting. Primary care doctors often use the three-stage model, memory clinics and researchers often use the CDR, and care facilities and hospice teams frequently refer to GDS or FAST.

Can I print a stages chart for my family?

Yes. Sharing a simple chart can help relatives understand changes and divide caregiving tasks. Just add a note that every person’s path is different.

Where can I find official resources?

The Alzheimer’s Association and the National Institute on Aging publish stage-by-stage guides and caregiver checklists that pair well with a chart.

Adding a Brain-Care Habit to Your Own Chart

Charts are about tracking change, and that can inspire a personal question: what goes on my own daily chart for brain health? Movement, sleep, social time and healthy meals are proven basics. Another idea gaining attention is the gut–brain axis, the remarkable communication system linking your digestive tract and your brain. It is an active and growing field of research, and it has sparked interest in supporting the brain from the gut up.

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