The Stages of Dementia, and What Each One Asks of a Family

Dementia runs seven to ten years on average from first symptoms, with wide variation. Some people decline far faster; others plateau for years. Vascular dementia often moves in steps rather than a slope, and Lewy body dementia has its own pattern.

So treat what follows as a way to plan rather than a timetable. The useful question at any point is not which stage is this but what should we decide now that will be harder to decide in a year.

Repeating stories within one conversation, losing words, misplacing things, difficulty with money and planning, withdrawal from things they used to enjoy. Often mistaken for ageing, and frequently hidden well by someone who knows something is wrong.

This is the most consequential stage and families waste it, because nothing yet looks urgent. Everything legal and financial should be settled here, while your parent can still take part and still has capacity to sign: durable power of attorney, health care proxy, living will, HIPAA authorisation, wills and beneficiaries checked.

Also the moment to ask what matters most to you in the time ahead and what would you want us to avoid, while they can answer. Families who have that conversation once, early, refer back to it for years.

Usually the longest phase, often several years. Help is needed with bathing, dressing and eating. Confusion about time and place becomes routine. Sundowning appears. Wandering becomes a genuine risk. Behaviour changes, and the person may not reliably recognise family.

This is where family-only care usually stops working, and where most people first bring in paid help. It is also where the driving conversation, and the can they still be alone conversation, become unavoidable.

The practical test through this stage is what happens at two in the morning. When the answer stops being that they would call for help, the arrangement needs to change.

Speech recedes to a few words or none. Walking becomes difficult and then stops. Swallowing problems appear, and with them the risk of aspiration pneumonia. Incontinence is usual. Care becomes largely physical and around the clock.

This is the stage families are least prepared for and where the decision between full-time care at home and a memory care community is genuinely balanced, because twenty-four-hour care at home often costs more than a facility.

It is also when hospice should be discussed rather than waited for.

The transitions carry more risk than the stages: a hospital discharge, a first fall, a move. Plan them rather than reacting, keep medication and routine continuous across a change, pre-stage a new environment with familiar objects, and expect a temporary decline in the first fortnight that is not necessarily permanent.

And engage hospice earlier than feels natural. Families who bring it in months rather than weeks before the end consistently describe the difference as the thing that mattered most.