Dr Hilary Jones  •   Published 08/09/2017  •  Updated 12/01/2024  •  By Dr Hilary Jones

What’s the Difference Between Dementia and Alzheimer’s Disease?

an elderly suffering from alzheimer's

What is Dementia?

Dementia is a term used to describe a group of symptoms that affect memory, thinking, and social abilities, to the point where they interfere with daily life. Dementia is not a specific disease, but rather a general term for a decline in cognitive function that is severe enough to disrupt normal activities and relationships.

What is Alzheimer’s?

Alzheimer’s disease is a type of dementia that causes problems with memory, thinking, and behaviour. It is the most common cause of dementia.

In Alzheimer’s disease, abnormal proteins build up in the brain and form clumps called plaques and tangles. These plaques and tangles interfere with communication between brain cells and cause them to die. Over time, this damage spreads to other areas of the brain, leading to a decline in cognitive function.

What’s the Difference Between Dementia and Alzheimer’s Disease?

According to the Alzheimer’s Society, “There are 900,000 people with Dementia in the UK, with numbers set to rise to over 1.6 million by 2040.” This is worthy of noting because this disease not only takes a toll on the patient themselves, but it takes a toll on the caregiver and other medical providers for the patient.

a lady helping her alzheimer's patient mother

Having Alzheimer’s can be frustrating for the patient as they lose their ability to do and remember things. And it is physically and emotionally draining on the loved ones who are watching their once vibrant family member or friend slowly change.

Alzheimer’s and Dementia often get mixed up in the same context as if they are the same thing. This is normal because they both have very similar symptoms.

However, Alzheimer’s is the most common form of dementia and the varying types of Dementia have similar symptoms. For example, memory loss, forgetfulness, slower thinking, reduced mental agility, change in the ability to perform everyday tasks such as cooking and cleaning, and mood changes all touch each spectrum of dementia. Depending on the person and their individual situation, symptoms may show at varying speeds.

definition of dementia and alzheimer's

More formally, according to WebMD, “Dementia is the name for a group of brain disorders that make it hard to remember, think clearly, make decisions, or even control your emotions. Alzheimer’s disease is one of those disorders, but there are many different types and causes of dementia.”

Dementia is the umbrella under which Alzheimer’s falls, and this can cause people to think they are one and the same. However, there are some differences.

Dementia is classified when someone has two of the following symptoms. It is not just about simple memory mishaps.

  • Memory
  • Communication and speech
  • Focus and concentration
  • Reasoning and judgment
  • Visual perception (can’t see the difference in colours or detect movement, or see things that aren’t there)

Since symptoms are similar to the different types of Dementia, it can be hard for a doctor to diagnose which type the patient has. Thus, you’ll need to notice all the symptoms and provide a history of any major traumas, drug or alcohol use, or other issues in order to get the most accurate diagnosis.

This includes any actions that the person is doing such as forgetting where they parked or wandering off aimlessly. Below is a list of symptoms that overlap for dementia and Alzheimer’s and symptoms of Alzheimer’s.

Both conditions can cause:

  • A decline in ability to think
  • Memory impairment
  • Communication handicap

The symptoms of Alzheimer’s Disease include:

  • Difficulty with short term memory
  • Apathy
  • Depression
  • Impaired judgment
  • Disorientation
  • Confusion
  • Behavioural changes
  • Difficulty speaking, swallowing, or walking in advanced stages of the disease

Lady with Dementia or Alzheimer's

As stated earlier, Alzheimer’s is the most common form of dementia. Alzheimer’s happens when proteins (called plaques) and fibres (called tangles) build up in your brain and block nerve signals and destroy nerve cells. This directly affects memory and is progressive.

Over time it may be difficult to carry on a conversation, or perform tasks in a daily routine such as tell time or use the bathroom. The disease is devastating. The life span from diagnosis to death can be as little as three years in people over 80 and longer for younger people, according to Healthline.

Another distinct difference between Dementia and Alzheimer’s is treatment. While the causes of some forms of Dementia can be treated, which may help, Alzheimer’s is non-reversible. In most cases, Dementia isn’t reversible. However, many forms are treatable and the right medication can help manage Dementia. Treatments for Dementia will depend on the cause.

Alzheimer’s treatment

There is no cure for Alzheimer’s, but options to help manage symptoms of the disease include:

  • Medications for behavioural changes, such as antipsychotics
  • Alternative remedies that aim to boost brain function or overall health, such as coconut oil or fish oil
  • Medications for sleep changes
  • Medications for depression

Dementia treatment

In some cases, treating the condition that causes dementia may help. Conditions that are most likely to respond to treatment include dementia due to:

  • Drugs
  • Tumors
  • Metabolic disorders
  • Hypoglycemia

Care of your loved one who has either disease is the most important variable that both diseases have in common. That is where Telecare24 comes into play. We have technologies as simple as wearable sensors that your loved ones can wear that can alert you to a fall or some other concern. To find out more about which product can help your loved one with Dementia or Alzheimer’s, contact us today.

We hope you found this article helpful. If so, please share it with your friends and family and visit our blogs for more useful information like the one in this article.

About The Author


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Dr Hilary Jones

Dr Hilary Jones MBE is an English GP with over 40 years of experience practicing as a medical doctor in England. Having featured on early morning television programming since May 1989, Jones currently... Read More

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