Dementia

What is dementia?

Dementia is a loss of mental functions that is severe enough to affect your daily life and activities. These functions include:

• Memory
• Language skills
• Visual perception (your ability to make sense of what you see)
• Problem solving
• Trouble with everyday tasks
• The ability to focus and pay attention

It is normal to become a bit more forgetful as you age. But dementia is not a normal part of aging. It is a serious disorder that interferes with your daily life.

What are the types of dementia?

The most common types of dementia are known as neurodegenerative disorders. These are diseases in which the cells of the brain stop working or die. They include:

• Alzheimer's disease, which is the most common form of dementia among older people. People with Alzheimer's have plaques and tangles in their brain. These are abnormal buildups of different proteins. Beta-amyloid protein clumps up and forms plaques in between your brain cells. Tau protein builds up and forms tangles inside the nerve cells of your brain. There is also a loss of connection between nerve cells in the brain.
• Lewy body dementia, which causes movement symptoms along with dementia. Lewy bodies are abnormal deposits of a protein in the brain.
• Frontotemporal disorders, which cause changes to certain parts of the brain:
  • Changes in the frontal lobe lead to behavioral symptoms
  • Changes in the temporal lobe lead to language and emotional disorders
• Vascular dementia, which involves changes to the brain's blood supply. It is often caused by a stroke or atherosclerosis (hardening of the arteries) in the brain.
• Mixed dementia, which is a combination of two or more types of dementia. For example, some people have both Alzheimer's disease and vascular dementia.

Other conditions can cause dementia or dementia-like symptoms, including:

• Creutzfeldt-Jakob disease, a rare brain disorder
• Huntington's disease, an inherited, progressive brain disease
• Chronic traumatic encephalopathy (CTE), caused by repeated traumatic brain injury
• HIV-associated dementia (HAD)

Who is at risk for dementia?

Certain factors can raise your risk for developing dementia, including:

• Aging. This is the biggest risk factor for dementia.
• Smoking
• Uncontrolled diabetes
• High blood pressure
• Drinking too much alcohol
• Having close family members who have dementia

What are the symptoms of dementia?

The symptoms of dementia can vary, depending on which parts of the brain are affected. Often, forgetfulness is the first symptom. Dementia also causes problems with the ability to think, problem solve, and reason. For example, people with dementia may:

• Get lost in a familiar neighborhood
• Use unusual words to refer to familiar objects
• Forget the name of a close family member or friend
• Forget old memories
• Need help doing tasks that they used to do by themselves

Some people with dementia cannot control their emotions and their personalities may change. They may become apathetic, meaning that they are no longer interested in normal daily activities or events. They may lose their inhibitions and stop caring about other peoples' feelings.

Certain types of dementia can also cause problems with balance and movement.

The stages of dementia range from mild to severe. In the mildest stage, it is just beginning to affect a person's functioning. In the most severe stage, the person is completely dependent on others for care.

How is dementia diagnosed?

Your health care provider may use many tools to make a diagnosis:

• A medical history, which includes asking about your symptoms
• A physical exam
• Tests of your thinking, memory, and language abilities
• Other tests, such as blood tests, genetic tests, and brain scans
• A mental health evaluation to see whether a mental disorder is contributing to your symptoms

What are the treatments for dementia?

There is no cure for most types of dementia, including Alzheimer's disease and Lewy body dementia. Treatments may help to maintain mental function longer, manage behavioral symptoms, and slow down the symptoms of disease. They may include:

• Medicines, which may temporarily improve memory and thinking or slow down their decline. They only work in some people. Other medicines can treat symptoms such as anxiety, depression, sleep problems, and muscle stiffness. Some of these medicines can cause strong side effects in people with dementia. It is important to talk to your health care provider about which medicines will be safe for you.
• Occupational therapy to help find ways to more easily do everyday activities
• Speech therapy to help with swallowing difficulties and trouble speaking loudly and clearly
• Mental health counseling to help people with dementia and their families learn how to manage difficult emotions and behaviors. It can also help them plan for the future.
• Music or art therapy to reduce anxiety and improve well-being

Can dementia be prevented?

Researchers have not found a proven way to prevent dementia. Living a healthy lifestyle might influence some of your risk factors for dementia.

Lewy Body Dementia

What is Lewy body dementia (LBD)?

Lewy body dementia (LBD) is one of the most common types of dementia in older adults. Dementia is a loss of mental functions that is severe enough to affect your daily life and activities. These functions include:

• Memory
• Language skills
• Visual perception (your ability to make sense of what you see)
• Problem solving
• Trouble with everyday tasks
• The ability to focus and pay attention

What are the types of Lewy body dementia (LBD)?

There are two types of LBD: dementia with Lewy bodies and Parkinson's disease dementia.

Both types cause the same changes in the brain. And, over time, they can cause similar symptoms. The main difference is in when the cognitive (thinking) and movement symptoms start.

Dementia with Lewy bodies causes problems with thinking ability that seem similar to Alzheimer's disease. Later, it also causes other symptoms, such as movement symptoms, visual hallucinations, and certain sleep disorders. It also causes more trouble with mental activities than with memory.

Parkinson's disease dementia starts as a movement disorder. It first causes the symptoms of Parkinson's disease: slowed movement, muscle stiffness, tremor, and a shuffling walk. Later on, it causes dementia.

What causes Lewy body dementia (LBD)?

LBD happens when Lewy bodies build up in parts of the brain that control memory, thinking, and movement. Lewy bodies are abnormal deposits of a protein called alpha-synuclein. Researchers don't know exactly why these deposits form. But they do know that other diseases, such as Parkinson's disease, also involve a build-up of that protein.

Who is at risk for Lewy body dementia (LBD)?

The biggest risk factor for LBD is age; most people who get it are over age 50. People who have a family history of LBD are also at higher risk.

What are the symptoms of Lewy body dementia (LBD)?

LBD is a progressive disease. This means that the symptoms start slowly and get worse over time. The most common symptoms include changes in cognition, movement, sleep, and behavior:

• Dementia, which is a loss of mental functions that is severe enough to affect your daily life and activities
• Changes in concentration, attention, alertness, and wakefulness. These changes usually happen from day to day. But sometimes they can also happen throughout the same day.
• Visual hallucinations, which means seeing things that are not there
• Problems with movement and posture, including slowness of movement, difficulty walking, and muscle stiffness. These are called parkinsonian motor symptoms.
• REM sleep behavior disorder, a condition in which a person seems to act out dreams. It may include vivid dreaming, talking in one's sleep, violent movements, or falling out of bed. This may be the earliest symptom of LBD in some people. It can appear several years before any other LBD symptoms.
• Changes in behavior and mood, such as depression, anxiety, and apathy (a lack of interest in normal daily activities or events)

In the early stages of LBD, symptoms can be mild, and people can function fairly normally. As the disease gets worse, people with LBD need more help due to problems with thinking and movement. In the later stages of the disease, they often cannot care for themselves.

How is Lewy body dementia (LBD) diagnosed?

There isn't one test that can diagnose LBD. It is important to see an experienced doctor to get a diagnosis. This would usually be a specialist such as a neurologist. The doctor will:

• Do a medical history, including taking a detailed account of the symptoms. The doctor will talk to both the patient and caregivers.
• Do physical and neurological exams
• Do tests to rule out other conditions that could cause similar symptoms. These could include blood tests and brain imaging tests.
• Do neuropsychological tests to evaluate memory and other cognitive functions

LBD can be hard to diagnose, because Parkinson's disease and Alzheimer's disease cause similar symptoms. Scientists think that Lewy body disease might be related to these diseases, or that they sometimes happen together.

It's also important to know which type of LBD a person has, so the doctor can treat that type's particular symptoms. It also helps the doctor understand how the disease will affect the person over time. The doctor makes a diagnosis based on when certain symptoms start:

• If cognitive symptoms start within a year of movement problems, the diagnosis is dementia with Lewy bodies
• If cognitive problems start more than a year after the movement problems, the diagnosis is Parkinson's disease dementia

What are the treatments for Lewy body dementia (LBD)?

There is no cure for LBD, but treatments can help with the symptoms:

• Medicines may help with some of the cognitive, movement, and psychiatric symptoms
• Physical therapy can help with movement problems
• Occupational therapy may help find ways to more easily do everyday activities
• Speech therapy may help with swallowing difficulties and trouble speaking loudly and clearly
• Mental health counseling can help people with LBD and their families learn how to manage difficult emotions and behaviors. It can also help them plan for the future.
• Music or art therapy may reduce anxiety and improve well-being

Support groups can also be helpful for people with LBD and their caregivers. Support groups can give emotional and social support. They are also a place where people can share tips about how to deal with day-to-day challenges.

NIH: National Institute of Neurological Disorders and Stroke

Alzheimer's Caregivers

A caregiver gives care to someone who needs help taking care of themselves. It can be rewarding. It may help to strengthen connections to a loved one. You may feel fulfillment from helping someone else. But sometimes caregiving can be stressful and even overwhelming. This can be especially true when caring for someone with Alzheimer's disease (AD).

AD is an illness that changes the brain. It causes people to lose the ability to remember, think, and use good judgment. They also have trouble taking care of themselves. Over time, as the disease gets worse, they will need more and more help. As a caregiver, it is important for you to learn about AD. You will want to know what happens to the person during the different stages of the disease. This can help you plan for the future, so that you will have all of the resources you will need to be able to take care of your loved one.

As a caregiver for someone with AD, your responsibilities can include:

• Getting your loved one's health, legal, and financial affairs in order. If possible, include them in the planning while they can still make decisions. Later you will need to take over managing their finances and paying their bills.
• Evaluating their house and making sure it's safe for their needs
• Monitoring their ability to drive. You may want to hire a driving specialist who can test their driving skills. When it is no longer safe for your loved one to drive, you need to make sure that they stop.
• Encouraging your loved one to get some physical activity. Exercising together may make it more fun for them.
• Making sure that your loved one has a healthy diet
• Helping with daily tasks like bathing, eating, or taking medicine
• Doing housework and cooking
• Running errands such as shopping for food and clothes
• Driving them to appointments
• Providing company and emotional support
• Arranging medical care and making health decisions

As you care for your loved one with AD, don't ignore your own needs. Caregiving can be stressful, and you need to take care of your own physical and mental health.

At some point, you will not be able to do everything on your own. Make sure that you get help when you need it. There are many different services available, including:

• Home care services
• Adult day care services
• Respite services, which provide short-term care for the person with AD
• Federal and state government programs that can provide financial support and services
• Assisted living facilities
• Nursing homes, some of which have special memory care units for people with AD
• Palliative and hospice care

You might consider hiring a geriatric care manager. They are specially trained professionals who can help you to find the right services for your needs.

NIH: National Institute on Aging

Alzheimer's Disease

What is Alzheimer's disease?

Alzheimer's disease (AD) is the most common form of dementia among older people. Dementia is a brain disorder that seriously affects thinking and memory skills. If you have AD, it can impair your ability to reason or learn new skills until it becomes difficult to complete daily activities.

AD begins slowly over many years. It first involves the parts of the brain that control thought, memory, and language. It may be mistaken for normal memory changes with aging. However, AD is not a normal part of aging. The brain changes from the disease lead to symptoms that get worse over time.

What are the symptoms of Alzheimer's disease?

People with AD may have trouble remembering recent events or the names of people they know. Behavior may vary from person to person and day to day. AD progresses in stages. Late-onset AD occurs in adults aged 65 and older, which is when most people develop the disease. Early-onset AD happens before age 65, which is not common.

Some symptoms of AD can include:

• Getting lost in familiar places
• Repeating the same question
• Not recognizing family members
• Having trouble speaking, reading, or writing
• Not taking care of yourself, such as not bathing or eating poorly

In AD, over time, symptoms get worse. Later on, people with AD may become anxious or aggressive or wander away from home. Eventually, they need total care. This can cause great stress for family members who must care for them.

Who is more likely to develop Alzheimer's disease?

Researchers don't fully understand what causes AD. Age is the biggest risk factor. Your risk is also higher if a family member has had the disease. Although people who develop Alzheimer's don't always have a history of the disease in their families.

Researchers believe the causes of AD may be a combination of age-related changes in the brain, along with genetic, health, and lifestyle factors. Some medical conditions that are associated with a higher risk of AD include:

• Hearing loss
• Depression
• Mild cognitive impairment
• Concussion or other traumatic brain injury (TBI)

A related problem, mild cognitive impairment (MCI), causes more memory problems than normal for people of the same age. Many, but not all, people with MCI will develop AD.

How is Alzheimer's disease diagnosed?

Some health conditions can cause memory loss or symptoms like AD. Talk with your health care provider if you're having noticeable changes in your memory. To determine if your symptoms are related to AD and not normal aging or another health condition, your provider may:

• Review your medical history and any medicines you're taking
• Conduct tests to check your memory, thinking, and problem-solving skills
• Ask about changes in behavior or personality
• Do tests to rule out any medical or mental health conditions
• Refer you to a provider that specializes in caring for older adults
• Recommend a neurologist, a doctor who specializes in treating diseases of the brain and nervous system

What are the treatments for Alzheimer's disease?

No treatment can stop the disease. However, some medicines may help keep symptoms from getting worse for a limited time.

Can Alzheimer's disease be prevented?

You can't change some risk factors, like your age. But changing certain lifestyle factors may promote your brain health and help you live a healthier lifestyle overall. This can include to:

• Manage chronic health issues such as high blood pressure or hearing loss
• Get regular physical activity
• Eat a healthy diet
• Quit smoking (or don't start)
• Get enough sleep
• Develop strong social connections

NIH: National Institute on Aging

Delirium

What is delirium?

Delirium is a mental state in which you are confused, disoriented, and not able to think or remember clearly. It usually starts suddenly. It is often temporary and treatable.

There are three types of delirium:

• Hypoactive, when you are not active and seem sleepy, tired, or depressed
• Hyperactive, when you are restless or agitated
• Mixed, when you change back and forth between being hypoactive and hyperactive

What causes delirium?

There are many different problems that can cause delirium. Some of the more common causes include:

• Advanced cancer.
• Alcohol or drugs, either from intoxication or withdrawal. This includes a serious type of alcohol withdrawal syndrome called delirium tremens. It usually happens to people who stop drinking after years of alcohol use disorder (AUD).
• Dehydration and electrolyte imbalances.
• Dementia.
• Hospitalization, especially in intensive care.
• Infections, such as urinary tract infections, pneumonia, and the flu.
• Medicines. This could be a side effect of a medicine, such as sedatives or opioids. Or it could be from withdrawal after stopping a medicine.
• Metabolic disorders.
• Organ failure, such as kidney or liver failure.
• Poisoning.
• Serious illnesses.
• Severe pain.
• Sleep deprivation.
• Surgeries, including reactions to anesthesia.

Who is more likely to get delirium?

Certain factors put you at risk for delirium, including:

• Being in a hospital or nursing home
• Having dementia
• Having a serious illness or more than one illness
• Having an infection
• Older age
• Having surgery
• Taking medicines that affect the mind or behavior
• Taking high doses of pain medicines, such as opioids

What are the symptoms of delirium?

The symptoms of delirium usually start suddenly, over a few hours or a few days. They often come and go. The most common symptoms include:

• Changes in alertness (usually more alert in the morning, less at night)
• Changing levels of consciousness
• Confusion
• Disorganized thinking, talking in a way that doesn't make sense
• Disrupted sleep patterns, sleepiness
• Emotional changes: anger, agitation, depression, irritability, overexcitement
• Hallucinations and delusions
• Memory problems, especially with short-term memory
• Trouble concentrating

How is delirium diagnosed?

Your health care provider may use many tools to make a diagnosis:

• A medical history, which includes asking about your symptoms
• Physical and neurological exams
• Mental status testing, which checks for problems with your thinking and alertness
• Lab and diagnostic imaging tests

Delirium and dementia have similar symptoms, so it can be hard to tell them apart. You can also have both at the same time. The differences between them are that:

• Delirium starts suddenly and can cause hallucinations. It is mainly a problem with attention and staying alert. The symptoms may get better or worse and can last for hours or weeks.
• Dementia develops slowly and does not cause hallucinations. It usually starts with memory loss. The symptoms don't change often, like they can with delirium. Dementia almost never gets better.

What are the treatments for delirium?

Treatment of delirium focuses on the causes and symptoms of delirium. The first step is to identify the cause. Often, treating the cause will lead to a full recovery. The recovery may take some time - weeks or sometimes even months. In the meantime, there may be treatments to manage the symptoms, such as:

• Controlling the environment, which includes making sure that the room is quiet and well-lit, having clocks or calendars in view, and having family members around
• Medicines, including those that control aggression or agitation and pain relievers if there is pain
• If needed, making sure that the person has a hearing aid, glasses, or other devices for communication

Can delirium be prevented?

Treating the conditions that can cause delirium may reduce the risk of getting it. Hospitals can help lower the risk of delirium by avoiding sedatives and making sure that hospital rooms are kept quiet, calm, and well-lit. It can also help to have family members around and to have the same staff members treat the person each day (if possible).