Start with the clock, not with the symptom list
Before anything else: these changes unfold over years. Weeks are the wrong unit.
A hard stretch after a bereavement. Two weeks flattened by flu. A new prescription, or three broken nights in a row. None of that is an early sign of anything, and reading it as one causes an enormous amount of avoidable fear.
What a clinician weighs is a slope that keeps its direction across six to twelve months, and that somebody close by has noticed without being prompted. Which points straight at the most useful thing a relative can do: keep a note. The date, and what you saw. Our sense of our own memory runs wrong in both directions, and so does our sense of anybody else's.
Why memory is usually not what the family spots
Alzheimer's begins in tissue dedicated to laying down new memories, so recent recall takes the first hit. It is still rarely the thing that gets reported.
Two things get in the way. The person adapts — notes on the counter, tighter routines, a partner filling blanks without ever discussing it. And some forgetting past sixty is universally expected, so it gets filed as nothing much.
What breaks through instead is conduct that does not match the person you know.
The Alzheimer's symptoms relatives mention first
Roughly the order in which the early warning signs of dementia get raised with a doctor.
- Pulling back. The Tuesday group gets dropped, an invitation gets declined, the talking stops in a crowded room. It reads as low mood, and sometimes low mood is exactly what it is — but keeping up with four voices at once can also have become genuinely tiring.
- Steering clear of paperwork that used to be routine: the bills, the forms, the banking app. Less about mistakes than about a reluctance that was not there a year ago.
- The same question twice in an hour, with no sense of having asked it already. Families find this one the hardest to explain away.
- A short temper that is out of character, above all when somebody is pressing them to remember.
- Sequences coming apart — a familiar recipe, locking up the house, an instruction with three steps in it.
- Space misjudged. Parking, stairs and driving can show this before anything else does.
- Reaching for the wrong word and producing it again, rather than stopping to retrieve the right one.
One distinction worth more than the whole list above
Everything above is suggestive. This next part is what actually separates the categories.
Ordinary forgetting is slow retrieval, and a cue repairs it: name the restaurant and the evening comes back. How Alzheimer's affects memory early on is different in kind — the information was never filed. A vacation taken in 1982 can be vivid while this morning's phone call is simply absent, and prompting produces nothing, because there is nothing there to prompt.
If one thing leaves this page with you, let it be that question.
What actually happens at an assessment
Less drama than most people brace for. It opens as a conversation: what changed, when, and who noticed. Then a short structured test of thinking, usually pen and paper, somewhere between ten and thirty minutes. Bloods to check thyroid function, B12 and the other reversible candidates. A walk through every medication, including anything bought off a shelf. A scan sometimes, and frequently not at the first visit.
For a sizeable minority the outcome is a treatable explanation with no dementia diagnosis attached to it at all.
Two arguments for going sooner, and nothing to buy
Reversible causes have a deadline. Thyroid, B12, depression, sleep apnea, drug effects, hearing — all treatable, all routinely read as the opening of something permanent, and all easier to catch while the picture is still mild. These are the signs of cognitive decline most likely to have an ordinary explanation behind them.
An early answer keeps the person in the room. Where nothing reversible turns up, there is still a stretch of time in which they can sit in on decisions about their own money, their own paperwork and their own care, instead of being told afterwards what was arranged. That stretch does not stay open.