Neurology
Memory problems
Memory problems mean finding it harder to remember things or think clearly, which can have many causes, not all of them serious.
Education and reference only. This explains the common causes of memory problems and the warning signs that need urgent help, in plain language — it is not a diagnosis or a substitute for advice from a clinician. If you feel very unwell or are worried, seek medical help.
Quick answer
What is memory problems?
Most people forget things now and then, and occasional lapses such as misplacing keys or forgetting a name are a normal part of life, especially when you are busy, tired or stressed. Memory problems become more important when they are getting worse over time, when other people notice them, or when they start to affect everyday tasks, work or safety.
- Get urgent help: Sudden confusion or a sudden change in thinking or behaviour — this is a medical emergency that can be caused by infection, low blood sugar or a stroke, so get urgent help. Memory loss after a head injury — get urgent assessment.
- Self-care: Good sleep, regular exercise, staying socially active and keeping your mind engaged all help your memory work at its best.
About memory problems
Most people forget things now and then, and occasional lapses such as misplacing keys or forgetting a name are a normal part of life, especially when you are busy, tired or stressed. Memory problems become more important when they are getting worse over time, when other people notice them, or when they start to affect everyday tasks, work or safety. Many causes are treatable, including low mood, anxiety, poor sleep, and an underactive thyroid. Sometimes ongoing decline in memory and thinking is a sign of dementia. Working out what is behind memory changes matters, because some causes can be reversed and others can be supported and managed.
When to get help
Call 999 or go to A&E if memory problems comes with any of these warning signs:
- Sudden confusion or a sudden change in thinking or behaviour — this is a medical emergency that can be caused by infection, low blood sugar or a stroke, so get urgent help.
- Memory loss after a head injury — get urgent assessment.
- Memory problems with weakness, slurred speech or facial drooping — this can be a stroke; call 999 and remember FAST (Face, Arms, Speech, Time).
When to see a doctor
See a doctor if your memory or thinking is getting steadily worse, if it is affecting daily tasks, work or safety, or if family and friends are noticing changes. It is also worth being seen if forgetfulness comes with low mood, poor sleep or tiredness, as these can be treatable causes. Getting an early assessment is helpful whatever the cause: some causes can be reversed, and where a condition such as dementia is found, early support and planning make a real difference.
Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.
What can cause it
Common causes of memory problems
Memory problems has many possible causes. Each links to a full, plain-language guide to that condition — what it is, how it's treated and when to seek help.
What helps
Self-care and what you can do
Good sleep, regular exercise, staying socially active and keeping your mind engaged all help your memory work at its best. Reduce things that scatter your attention, such as trying to do too much at once, and use practical aids like lists, calendars, reminders and a set place for important items. Managing stress and low mood, eating well and limiting alcohol also support clearer thinking. If you are worried about your memory, it can help to keep a note of what you are forgetting and when, so you can describe it clearly when you seek advice.
Answers
Memory problems: frequently asked questions
Is forgetfulness always a sign of dementia?
No. Occasional forgetfulness is normal, and many causes of memory problems are treatable, including stress, low mood, poor sleep and an underactive thyroid. Dementia tends to cause a gradual decline that gets worse over time and is noticed by others.
When are memory problems an emergency?
Sudden confusion, a sudden change in behaviour, or memory problems with weakness, slurred speech or facial drooping need urgent help. The last group can be a stroke — call 999 and think FAST.
Can stress and tiredness affect my memory?
Yes. Stress, anxiety and lack of sleep are very common reasons for forgetfulness, because they make it hard to concentrate and take in new information. Improving sleep and managing stress often helps memory noticeably.
Should I see a doctor about my memory?
Yes, if it is getting worse, affecting daily life, or others are noticing it. An assessment can find treatable causes and arrange support early if needed. It is better to be seen than to worry alone.
Sources
Where this is drawn from
- NICE CKS: Dementia.
- Alzheimer's Society (dementia charity)
Related symptoms
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