Memory Loss: Causes, Symptoms, and Treatment

Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 23, 2026.

What kind of doctor treats Memory Loss?

A primary care doctor often starts the evaluation of memory loss. A neurologist, a doctor who specializes in treating diseases of the brain and nervous system, may also help. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.

What is memory loss?

Memory loss is unusual forgetfulness. You may not be able to remember new events, recall memories of the past, or both. It may last a short time and then go away. Or it may not go away, and it can get worse over time, depending on the cause.

It is normal to forget things once in a while at any age. Normal aging does not lead to dramatic memory loss. Serious memory problems make daily tasks hard. These include driving, using the phone, and finding the way home. Forgetting how to use your phone or find your way home may be a sign of a more serious problem.

Symptoms

Signs that it might be time to talk with a doctor include:

  • Asking the same questions over and over again.
  • Getting lost in places you used to know well.
  • Having trouble following recipes or directions.
  • Becoming more confused about time, people, and places.
  • Not taking care of yourself, such as eating poorly, not bathing, or behaving unsafely.

Memory loss is common in dementia, but it is not the only sign. People with dementia may also have problems with language skills or paying attention. Some people have personality changes.

Causes and who gets it

Memory loss can be caused by many things. Some causes are a new injury to the brain, such as:

  • A brain tumor.
  • A concussion or other head injury.
  • A stroke.
  • A serious infection of the brain or the tissue around it.

Other causes include:

  • Depression, bipolar disorder, or a major traumatic or stressful event.
  • Alcohol, or the use of prescription medicines or illegal drugs.
  • Medicine side effects.
  • Low levels of important nutrients, such as vitamin B1 or B12.
  • Thyroid, kidney, or liver problems.
  • Sleep problems.
  • Illness that damages brain tissue or nerve cells, such as Parkinson disease or Huntington disease.

Stress and negative emotions can also cause memory problems. These problems are usually temporary and improve as the stress and emotions fade.

Memory loss may be a sign of dementia. Types of dementia include Alzheimer's disease, Lewy body dementia, frontotemporal dementia, and vascular dementia. Dementia is not a normal part of aging.

How doctors diagnose it

To find the cause, your provider will ask if the problem came on suddenly or slowly. Your provider will do a physical exam and ask about the person's medical history and symptoms. Providers usually ask family members and friends questions too. They may ask whether the memory loss began after something like a head injury or surgery.

Tests that may be done include:

  • Blood tests for diseases your provider suspects, such as low vitamin B12 or thyroid disease.
  • Memory and thinking tests, called cognitive tests.
  • A CT scan or MRI of the head.
  • A PET scan of the brain.

Treatment

Treatment depends on the cause of memory loss. Memory problems from conditions such as depression or blood clots usually go away once the condition is successfully treated. Finding the cause is important for choosing the best plan.

These habits may help you deal with changes in memory:

  • Follow a daily routine.
  • Use calendars, notes, and to-do lists.
  • Get enough sleep, generally seven to eight hours each night.
  • Exercise and eat well.
  • Get help if you feel depressed for weeks at a time.

For a person with memory loss, it helps to show familiar objects or photos, or to play familiar music. It also helps to write down when the person should take any medicine or do other key tasks. People with memory problems should make a follow-up appointment to check their memory every six to 12 months.

When to see a doctor

Talk with a doctor if you notice changes in your memory. If memory problems last past a few weeks, talk with your doctor. They may be a sign of something more serious.

Call 911 or go to the emergency room if memory loss comes with a sudden change in mental state. Examples are sudden confusion, unusual behavior, sudden weakness or dizziness, a change in vision, or trouble speaking. Also go if it follows a head or spine injury.

How a direct primary care or concierge doctor fits in

A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Such a doctor can ask about your symptoms and health history, and order first tests such as blood tests. They can refer you to a neurologist and help with follow-up visits to check your memory.

Common questions

Is memory loss a normal part of aging?

Some forgetfulness is normal with age, but dramatic memory loss is not. More serious memory problems can come from mild cognitive impairment, dementia, or other causes.

Does memory loss always mean dementia?

No, memory loss can have many causes, and dementia is only one of them. Depression, blood clots, and medicine side effects can also cause memory problems.

Can memory loss be reversed?

It depends on the cause. Memory loss can last a short time and then go away, or it may not go away. Memory problems caused by conditions such as depression or blood clots usually go away once the condition is successfully treated.

Sources

  1. MedlinePlus - Memory loss
  2. National Institute on Aging - Memory Problems, Forgetfulness, and Aging
  3. MedlinePlus - Memory

Medical Disclaimer

This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.