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Early, middle & late stages
What changes, what it needs from you, and what to get ready before the next stage arrives. Nobody moves through this on a schedule — but knowing the shape of it helps you plan instead of react.
Read this before the stages
Stages are a rough map, not a timetable. People skip things, go back and forth, and hold on to some abilities long after others have gone. A person in the middle stage can still enjoy music, laugh at a joke and recognise a kindness.
Alzheimer's typically runs for years after diagnosis, but the range is very wide and depends on age, other illnesses and what stage the diagnosis came at. If you want an estimate for your own situation, ask the treating doctor — nobody on the internet can give you one.
Early stage
The person is still independent. They drive, work, socialise, and manage most of their own life. From the outside, most people notice nothing.
What changes
- Trouble finding the right word or a familiar name.
- Forgetting something they have just read, or a name just after being introduced.
- Losing or misplacing something valuable.
- More difficulty planning, organising, and keeping on top of money.
- Often, a quiet withdrawal from things that have become hard work.
What it needs from you
- Support, not takeover. Doing things for someone who can still do them speeds up the loss of the ability. Let it take longer.
- Build the scaffolding now — a calendar on the wall, a pill organiser, a routine, a consistent place for keys and wallet.
- Talk while talking is easy. What they want later. Where they want to live. What they would refuse. This window closes, and it closes quietly.
- Let them keep working or driving as long as it is genuinely safe — and agree now how you will both recognise when it is not.
Get this done in the early stage
- Power of attorney, financial and health. It requires legal capacity, which is present now.
- Advance directive and living will.
- Find every document: will, deeds, policies, accounts, passwords.
- Ask about treatments — several approved drugs are only for early-stage disease.
- Ask about clinical trials, which mostly recruit at this stage.
Middle stage
Usually the longest stage, and it can last for years. This is where caregiving becomes a real job. Damage is now widespread enough to affect language, judgement, mood and behaviour.
What changes
- Forgetting events and personal history. Confusing where they are and what year it is.
- Needing help choosing clothes for the weather or the occasion.
- Trouble controlling bladder and bowels.
- Sleep turning upside down — awake at night, sleeping through the day.
- Wandering, and getting lost in places that should be familiar.
- Personality changes: suspicion, repeated actions, sometimes accusations of theft.
- Agitation that gets worse in the late afternoon and evening, often called sundowning.
- Still able to take part in daily life, with help and prompting.
What it needs from you
- Routine becomes the main tool. Same order, same times, same places. Predictability does more for agitation than almost anything else.
- Change how you ask. Short sentences. One instruction at a time. Two choices, not an open question.
- Treat behaviour as communication. Agitation usually means pain, hunger, needing the toilet, too much noise, or fear. Look for the cause before anything else.
- Do not argue with a false belief. Arguing does not restore the fact and it does create distress. Respond to the feeling underneath it.
- Get outside help in. This is the stage when caregivers burn out, and the stage where day programmes and home aides make the biggest difference.
Get this done in the middle stage
- Stop driving, with a plan for how they will get around instead.
- Identification and a wandering plan — this is when wandering usually starts.
- A serious look at the money: what care costs, what Medicaid requires, what is coming.
- Visit care settings before you need one. Decisions made in a crisis are worse decisions.
- Set up regular respite. Not as a reward — as maintenance.
Late stage
Care is now around the clock and mostly physical. Conversation largely goes, but connection does not.
What changes
- Little or no awareness of recent experience or surroundings.
- Loss of the ability to hold a conversation; sometimes a few words, sometimes none.
- Help needed with everything — eating, washing, dressing, the toilet.
- Difficulty walking, then sitting up, then holding the head up.
- Trouble swallowing, which brings a real risk of food or drink entering the lungs.
- Much higher vulnerability to infection, especially pneumonia.
What it needs from you
- Comfort is the goal now. Warm, clean, fed, free of pain, not frightened.
- Watch for pain that cannot be reported. Grimacing, flinching on being moved, restlessness, refusing food. Untreated pain is one of the most common causes of late-stage distress — raise it with the doctor.
- Use the senses that still work. Touch, music, familiar smells, your voice, being read to. People respond to these long after words are gone.
- Protect the skin and the mouth. Repositioning and mouth care prevent a lot of suffering.
- Ask about hospice early. Families almost universally say afterwards that they wish they had called sooner. It is not giving up; it is a different set of goals.
Decisions that come up in the late stage
Feeding tubes. Hospital admission for an infection. Antibiotics or comfort care. Resuscitation.
There are no universally right answers, and this page will not pretend otherwise. What helps is having the advance directive written, the person's own words on record, and a doctor or palliative-care team who will talk you through the real trade-offs of each option. Ask for a palliative care consultation — you can have one long before hospice.
End of life
Hospice care is available when a doctor certifies a likely prognosis of six months or less, and for people on Medicare it is largely covered. It usually comes to wherever the person lives, including a nursing home. It brings nurses, aides, equipment, medicines for comfort, a chaplain if wanted, and bereavement support for the family afterwards.
Grief after a long dementia illness is often complicated. Many people have been grieving for years already, and then feel relief, and then feel guilty about the relief. All of that is normal and none of it means you loved the person any less.
If you are struggling badly — before, during or after — call the Alzheimer's Association at 800.272.3900, any hour. If you are in crisis, call or text 988.
What costs look like as stages progress
All the figures below are medical costs only. They leave out long-term care, which is the largest cost for most families, and the unpaid hours families put in. For those, see what care costs.
| Stage | Cost a year |
|---|---|
| Normal thinking | $6,042 |
| Mild cognitive impairment (MCI) | $6,784 |
| Dementia, in the year it was found | $9,431 |
| Established dementia | $11,678 |
Source: Leibson and colleagues, 2015, from provider records in one US county. The study does not say which year's dollars it used. The gap between normal thinking and MCI was not statistically significant.
| Stage at diagnosis | Three months before | Three months of diagnosis |
|---|---|---|
| Mild | $3,192 | $8,491 |
| Moderate | $2,534 | $8,831 |
| Severe | $2,645 | $8,169 |
Source: Xu and colleagues, 2025, from traditional Medicare claims (2016). Spending is measured from the claims. The stage at diagnosis was estimated by a model.
The evidence Costs and economics → The full picture: total cost of care, out-of-pocket spending, and who pays. The evidence Care settings by state → Nursing home and assisted living availability, staffing and prices where you live.