Early signs of Alzheimer’s symptoms

Early signs of Alzheimer’s are the changes other people can observe, such as repeated questions or missed bills, while symptoms are what the person experiences, such as feeling that new information “will not stick” or that conversations move too fast. Both usually start with short-term memory, but some people first notice problems with words, vision, planning, mood, smell or sleep. Any change that is new, persistent and gradually worsening deserves a medical evaluation.

Looking at early Alzheimer’s from both angles, inside and outside, can help people recognize it sooner. This article explains the difference between signs and symptoms, describes the early changes that do not involve memory, covers less common forms of Alzheimer’s, and lists conditions that can look similar but are treatable.

Signs vs. Symptoms: Two Views of the Same Change

Doctors use the word “sign” for something that can be observed or measured and “symptom” for something a person feels or reports. In early Alzheimer’s, they often describe the same underlying problem from different perspectives.

Some people with Alzheimer’s lose awareness of their own changes, a feature called anosognosia. In that case, signs noticed by family members become especially important.

Early Changes Beyond Memory

Memory loss gets the most attention, but early Alzheimer’s can involve other areas too:

• Mood and motivation: new anxiety, irritability, low mood or apathy, sometimes before obvious memory trouble.
• Executive function: difficulty planning, organizing, multitasking or adapting to changes in routine.
• Language: shrinking vocabulary, trouble naming objects or following complex sentences.
• Visual-spatial skills: trouble judging distance, parking, reading or recognizing objects.
• Sense of smell: research has linked a reduced sense of smell to a higher risk of cognitive decline, though it has many other causes.
• Sleep: changes in sleep patterns are common in Alzheimer’s, and poor sleep can also worsen thinking.

Less Common Forms That Start Differently

Most people with Alzheimer’s have the typical memory-first pattern. A smaller group has an atypical form, which is more common in younger-onset cases and can be harder to recognize:

1. Posterior cortical atrophy: begins with visual problems, such as trouble reading, judging distance or recognizing objects, while the eyes themselves are healthy.
2. Logopenic variant primary progressive aphasia: begins with language problems, especially finding words and repeating phrases.
3. Frontal (behavioral or dysexecutive) presentation: starts with changes in planning, judgment or behavior.

People with these forms may first visit an eye doctor, speech therapist or counselor before anyone considers Alzheimer’s. Specialists in memory clinics are familiar with these patterns.

Look-Alike Causes to Rule Out

Many conditions can produce early signs and symptoms that resemble Alzheimer’s. Some are fully or partly treatable, which is why a careful evaluation is so valuable:

• Thyroid disorders
• Vitamin B12 deficiency
• Depression and anxiety
• Obstructive sleep apnea and chronic poor sleep
• Untreated hearing or vision loss
• Side effects of medications, including some sleep aids, allergy pills and drugs with anticholinergic effects
• Infections, especially urinary tract infections in older adults, which can cause sudden confusion
• Heavy alcohol use
• Normal pressure hydrocephalus, a fluid buildup that can cause memory problems, walking changes and bladder issues

How Doctors Put the Picture Together

Evaluation combines the person’s own description of symptoms with signs observed by others and by the doctor. Expect a detailed history, a physical and neurological exam, a brief cognitive screening test, blood work and sometimes brain imaging. When the cause is still unclear, specialized tests can look for Alzheimer’s-related proteins through PET scans, spinal fluid or, in some settings, blood tests. Neuropsychological testing can map strengths and weaknesses in more detail. Results are often reviewed again after several months, because the way changes evolve over time is one of the most useful clues of all.

A fun daily focus routine, such as the free Daily Brain Check, can be a nice way to start your morning, but it is not a medical or dementia test and cannot sort out signs or symptoms.

Keeping a Two-Sided Journal

Because signs and symptoms tell different parts of the story, some families keep a simple two-column journal for a few weeks before a doctor’s visit. In one column, the person writes what they feel, such as moments of confusion, frustration or fatigue. In the other, a partner or adult child writes what they observe, with dates. This approach respects the person’s own experience while giving the doctor objective examples. It also tends to reduce arguments, since both points of view are recorded rather than debated.

Frequently Asked Questions

Can depression be an early symptom of Alzheimer’s?

Depression and apathy can appear early in Alzheimer’s, but depression on its own is also common and treatable. A doctor can help tell them apart.

Why would someone not notice their own symptoms?

Alzheimer’s can affect self-awareness. That is why input from family members is so helpful during an evaluation.

Is losing my sense of smell a sign of Alzheimer’s?

It can be associated with cognitive decline, but it has many common causes, such as sinus problems and viral infections. Mention it to your doctor. Learn more from the Alzheimer’s Association and the National Institute on Aging.

Looking After the Brain From the Inside Out

One theme runs through this article: the brain does not work in isolation. Sleep, mood, hearing, medications and overall health all affect how clearly we think. Researchers have added another fascinating player to that list: the gut. The gut–brain connection is one of the busiest areas of health research today, and it is inspiring many people to rethink how they support their minds.

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