Navigation Link

Alzheimers Disease and other Cognitive Disorders

Introduction to Cognitive Disorders

Alzheimers Disease and other Cognitive Disorders

"Cognition" is a fancy word that mental health professionals use to describe the wide range of brain-based behaviors that we rely on every day. Cognition encompasses lots of different skills, including perception (taking in information from our sensory organs), memory, learning, judgment, abstract reasoning (thinking about things that aren't directly in front of us), problem solving, using language, and planning.

We take many of these cognitive skills for granted as we go about our routine activities. For instance, eating breakfast in the morning is a relatively complex task that involves multiple steps. First, we need to be aware of (health care professionals call this "oriented to") the time, and realize that it is appropriate to have an early meal. Next, we need to decide what to eat, which involves generating different meal choices and making a selection. Then, we need to follow the correct steps in order to prepare the meal. Even something simple like a bowl of oatmeal...More

Fast Facts: Learn! Fast!

What are cognitive disorders?

  • "Cognition" describes the wide range of brain-based behaviors that we rely on every day.
  • Cognition includes lots of different skills, including perception (taking in information from our sensory organs), memory, learning, judgment, abstract reasoning (thinking about things that aren't directly in front of us), problem-solving, using language, and planning.
  • Damage to any part of the brain can cause a cognitive disorder.

For more information

What are the causes of a cognitive disorder?

  • Cognitive disorders can be caused by all sorts of brain problems, including tumors, strokes, closed-head injuries, infections, exposure to neurotoxins (i.e., substances that are toxic to the brain), genetic factors, and disease.
  • The specific type of cognitive disorder someone develops depends on the part of the brain that is affected.
  • For instance, a tumor that grows in the brain's speech centers will result in problems with communication. Similarly, an infection in the brain's motor centers will cause problems with movement.

For more information

Can cognitive disorders be cured?

  • Professionals classify cognitive disorders into two broad categories: those that are irreversible, or not curable, and those that are reversible or curable.
  • Dementias are irreversible, progressive, degenerative disorders that gradually reduce a person's ability to function in everyday life.
  • A person with dementia cannot regain his or her previous level of functioning, even though some symptoms may be managed through treatment.
  • Examples of this type include Alzheimer's Disease, Lewy Body Dementia, and Dementia caused by the AIDS/HIV virus.
  • Examples of reversible cognitive disorders are pseudodementia and delirium.

For more information

What is Dementia?

  • Many people mistakenly use dementia as a synonym for Alzheimer\'s Disease.
  • "Dementia" is an umbrella-like term that refers to any brain syndrome that causes multiple cognitive deficits without specifying the cause for the symptoms.
  • A person with dementia can experience all sorts of problems, including: 1) Impaired Memory (especially the ability to remember recent events and newly learned facts) 2) Impaired Language Skills (decreased ability to communicate to others and understand what is being communicated) 3) Impaired Orientation (not knowing who one is, where one is, and/or what time it is) 4) Impaired Judgment (the ability to make decisions regarding personal, interpersonal, financial, and/or medical affairs) 5) Impaired Executive Functioning (the ability to plan and carry out daily tasks and make decisions).
  • Dementia can be caused by one medical condition or by multiple medical problems. Most dementias are caused by one of the following: 1) Alzheimer's Disease, which accounts for 50-70% of all dementia cases 2) Vascular Disease, which accounts for 15-20% of all dementia cases and includes strokes (disruptions in the blood supply to the brain) and transient ischemic attacks (TIAs, or mini strokes) and 3) Lewy Body Disease, which accounts for up to 20% of all dementia cases.

For more information on Dementia and its Causes

What is Alzheimer's Disease?

  • Alzheimer's Disease is the most frequent cause of dementia and is not a normal part of aging or "just what happens when we get old."
  • There are several differences between normal aging and Alzheimer's Disease:
    • Forgetfulness - People aging normally might forget part of an experience (I can't remember what I had for breakfast yesterday). People with Alzheimer's Disease will forget the entire experience (I can't remember yesterday morning at all).
    • Remembering - People aging normally may forget something (such as a movie recommendation for a friend), but they will eventually recall the desired information (e.g., later in the evening or the next day). People with Alzheimer's will not recall the information at a later time.
    • Comprehension - People aging normally can usually follow verbal or written instructions with no problem (e.g., filling out a sweepstakes entry or following a recipe). People with Alzheimer's Disease become less and less able to follow instructions (or multiple step directions) as the disease progresses.
    • Memory Aids - People aging normally will usually benefit from using notes and other reminders (e.g., a grocery list). People with Alzheimer's gradually become less able to benefit from memory aids (e.g., they will forget that they have a list, or forget how to use the list).
    • Self-Care - People aging normally may be stiff or have some aches and pains, but they can still complete personal care tasks (e.g., bathing, dressing, styling hair, going to the bathroom, etc.). People with Alzheimer's lose the ability to perform these kinds of tasks because they cannot remember the steps involved, and eventually, they won't remember when these tasks are appropriate.
  • According to a 2008 national study, 9.7% of individuals age 71 and over in the United States - or 2.4 million people - have the disorder.
  • When you include people of all ages, over 5 million individuals in the United States currently have Alzheimer's Disease.
  • The risk of developing AD increases dramatically with age; almost 50% of individuals over 85 are coping with this disorder.
  • Estimates suggest that if a cure or an effective prevention strategy for Alzheimer's is not found by the year 2050, anywhere between 11 and 16 million people age 65 and older will be affected.

For more information on Alzheimer's Diease
For more information on causes
For more information on diagnostic criteria
For more information on warning signs
For more information on how it is diagnosed
For more information on how it is treated

Can Dementia and Other Cognitive Disorders be prevented?

  • There is no "vaccine" against dementia, nor is there a guarantee that the prevention methods will work for everyone.
  • Healthy lifestyle choices regarding diet, nutrition, exercise, and intellectual and social activity can reduce the risk of developing dementia and other cognitive disorders.
  • Research suggests that the risk can be lowered by adopting a "brain-healthy" diet that avoids saturated fat and cholesterol and includes dark-skinned fruits and vegetables, cold-water fish, and other foods that contain Omega-3 fatty acids.
  • Cardiovascular exercise that strengthens the pumping force of your heart, such as swimming, walking, running, and cycling, and resistance training that strengthens muscles, such as weight lifting and sit-ups are the best types of exercise for brain health.
  • Excellent ways to stay mentally active include reading; writing; doing crossword puzzles or other kinds of games; attending classes, lectures, and plays; and taking up new hobbies.
  • Research suggests that social activities which combine physical and mental activity are the most effective at preventing dementia. For instance, walking with a friend while talking about a topic that requires problem solving is better than just walking, just visiting a friend, or just problem solving while alone.
  • Great ways to stay socially active include being involved in work or volunteer activities, joining clubs, and traveling, particularly in organized travel groups.

For more information 

What coping skills can someone with dementia use?

  • If you have recently been diagnosed with dementia, it is normal to experience a wide range of emotions, such as denial, anger, fear, loneliness, frustration, loss, and/or depression.
  • Take care of your physical health through nutrition, exercise, and adequate rest.
  • Schedule regular medical check-ups with a professional who has expertise in dementia and related conditions.
  • Be sure to take medications as prescribed, and return to the doctor before making any changes to your medications on your own.
  • Avoid using alcohol as a coping mechanism because it could interact with medications or cause additional health or cognitive problems.
  • Consider keeping a journal to write down, express, and work through your feelings.
  • Find an early-stage dementia support group where you can connect with others who have been diagnosed and learn more about the disease.
  • Seek mental health treatment if you are depressed and coping strategies are not helping.
  • Keep the lines of communication open with family and friends.
  • Continue participating in your favorite and regular activities as long as you can, and as long as you still enjoy them.
  • Perform difficult tasks at times of the day when you feel your best and most alert.
  • Keep a written schedule handy to keep track of appointments, tasks, and medication schedules.
  • Make sure your belongings are organized in such a way that things are easy to find.
  • Remember that a diagnosis of dementia does not mean that life is over. It means that there will be challenges ahead, and thinking about those challenges now will better prepare your whole family for them and benefit all of you in the long run.

For more information

What coping skills can a caregiver of someone with dementia use?

  • Dementia poses significant changes and sources of stress for those who care for a person with the diagnosis.
  • Learn as much as you can about the disease as soon as possible. You will be better prepared to handle the variety of challenges associated with dementia if you know what to expect and have some ideas about how other people have handled similar challenges.
  • Adjust your expectations by imagining what your loved one is going through.
  • Attend to your own physical and mental health because you cannot help someone else without helping yourself first.
  • Keep the lines of communication open with family and friends.
  • Make sure that legal and financial issues are in order, and include your loved one in the decision-making process as much as possible.
  • Take an active role in your loved one's health care.
  • Plan activities with your loved one that you both enjoy and that can be adapted to the person's current level of functioning.
  • Monitor yourself for signs of caregiver burnout, such as anger, anxiety, irritability, or depression.
  • To prevent or address caregiver burnout, try joining a caregiver support group, which can provide education, emotional support, and connections to local resources that can help you meet your caregiving responsibilities.
  • If self-coping methods are not working, seek mental health care from a professional who has expertise in addressing caregiver burnout, depression, and grief.

For more information

News Articles

  • Antipsychotic Medication Use Can Be Reduced in Dementia Patients

    Hoping to cut the use of antipsychotic drugs in nursing home residents, researchers tried training staff on new ways to meet the needs of residents with dementia. Their findings were published online April 17 in JAMA Internal Medicine. More...

  • Past Psychiatric Disorders Do Not Raise Risk of Alzheimer's Disease

    Having a mental health disorder doesn't translate into a higher risk of Alzheimer's disease later in life, according to a study published in European Psychiatry. More...

  • Past Psychiatric Ills Don't Raise Alzheimer's Risk: Study

    But more recent symptoms may be part of the disease. More...

  • Xanax, Valium May Boost Pneumonia Risk in Alzheimer's Patients

    Researchers suspect people may breathe saliva or food into their lungs due to fatigue from the drugs. More...

  • SGA Prescribing Higher for Veterans With PTSD/Dementia

    Elderly veterans with post-traumatic stress disorder with dementia have increased odds of being prescribed second-generation antipsychotics compared with those with PTSD alone, according to a study published online April 3 in the Journal of the American Geriatrics Society. More...

  • 41 More
    • Drug Tied to Dementia Risk Overprescribed to Seniors: Study

      Lower cost might help drive doctors' choice, researchers say. More...

    • Proton Pump Inhibitor Use Ups Pneumonia Risk in Dementia

      For patients with dementia, proton pump inhibitor use is associated with increased risk of pneumonia, according to a study published online March 21 in the Journal of the American Geriatrics Society. More...

    • Vitamin E, Selenium Supplements Won't Curb Men's Dementia Risk

      Brain expert says it's unlikely that any one nutrient would be a 'silver bullet.' More...

    • Dizzy Spells in Middle-Age Tied to Dementia Risk Later

      Rapid drops in blood pressure that cause light-headedness may do serious damage, study suggests. More...

    • Immune Disorders Such as MS, Psoriasis May Be Tied to Dementia Risk

      Study found 20 percent higher odds for memory-robbing condition, but didn't prove cause and effect. More...

    • Is Need for More Sleep a Sign of Pending Dementia?

      Study finds an association but doesn't prove cause and effect. More...

    • Unhealthy in Middle Age, Dementia in Old Age?

      Diabetes, high blood pressure, smoking may set you up for Alzheimer's, research suggests. More...

    • HRT Won't Lower Women's Alzheimer's Risk, Study Finds

      There was some hint that long-term hormone therapy might have a benefit, but results weren't definitive. More...

    • Bilingual People May Have an Edge Against Alzheimer's

      Study found they did better on memory tests that patients who only spoke one language. More...

    • Busy Minds May Be Better at Fighting Dementia

      Computer use, crafting, social activities and games all seem to boost brain health, study finds. More...

    • Link Seen Between Concussions and Alzheimer's

      But study didn't prove head injuries cause the degenerative brain disease. More...

    • Does Living Near Major Roads Boost Dementia Risk?

      Study couldn't prove cause-and-effect, but risk rose as proximity to traffic increased, researchers report. More...

    • Is Dementia in Older Women Tied to 20-Year Rate of Weight Loss?

      For women surviving into late life, the rate of weight loss over 20 years is associated with development of mild cognitive impairment or dementia, according to a study published online Dec. 19 in the Journal of the American Geriatrics Society. More...

    • β-Blockers May Not Be Appropriate for Dementia Patients

      β-blockers may not be the medicine of choice for nursing home residents with dementia, according to a study published online Dec. 12 in JAMA Internal Medicine. More...

    • Test Predicting Alzheimer's Would Be Welcome, Survey Finds

      3 out of 4 seniors said said they'd want to know. More...

    • Beta Blockers May Not Be Best Heart Drugs for Dementia Patients

      In this group, use of the meds after a heart attack compromised quality of life, study finds. More...

    • Alzheimer's Protein Plaques May Also Harm the Heart

      Deposits can cause patients' heart muscle to stiffen, keeping it from pumping properly, study suggests. More...

    • Some Elderly With Alzheimer's Brain Plaques Stay Sharp

      Study finding raises question of whether something protected their brains. More...

    • Brain Scans May Improve Dementia Diagnosis, Treatment

      People with Lewy body dementia generally don't lose volume in the hippocampus, study shows. More...

    • Could Loneliness Be an Early Sign of Alzheimer's?

      People with 'biomarkers' for the brain disease were more likely to feel socially detached, study finds. More...

    • Study Links Disasters to Dementia

      Losing home was tied to greater mental decline among elderly tsunami survivors. More...

    • Animal Study Hints at Gene Therapy's Possible Promise for Alzheimer's

      But the research is very preliminary and much work remains to be done, U.K. researchers say. More...

    • Study Finds Fault With ICU Treatment of Dementia Patients

      Hospitals put too many on ventilators, adding to their suffering and treatment costs, researchers say. More...

    • Women's Memory Advantage Might Skew Alzheimer's Diagnosis

      Women tend to hold on to better verbal memory skills as they age compared to men, study finds. More...

    • Deep Brain Stimulation May Improve TBI Symptoms

      Deep brain stimulation may help patients with traumatic brain injury gain more independence, according to a study published recently in Neurosurgery. More...

    • Can Brain 'Pacemaker' Improve Lives of Head Trauma Patients?

      Deep brain stimulation appears to boost function and quality of life, small study finds. More...

    • 9/11 Responders May Be at Higher Risk for Early Dementia

      Posttraumatic stress disorder experienced by many rescuers and other first responders of 9/11 now appears linked to cognitive impairment and dementia, according to a report published online Aug. 18 in Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring. More...

    • Even a Little Exercise May Help Stave Off Dementia

      Sedentary seniors more likely to suffer mental decline, study finds. More...

    • Healthy Diet, Exercise May Help Keep Alzheimer's at Bay

      Study finds people who are active and eat well have fewer brain effects linked to the disease. More...

    • Underweight Seniors May Have Added Alzheimer's Risk

      Study links lower body weight to increased amounts of disease-causing plaque in the brain. More...

    • Delirium Common in Cancer Patients Seen in ER

      But serious confusion missed in about 40 percent, study found. More...

    • Women May Be More Resilient to Effects of Alzheimer's Genes

      Physical, mental fitness and socializing also seemed to help higher-risk group, research shows. More...

    • Alzheimer's Gene May Show Effects in Childhood

      Brain scans reveal slower development in certain areas. More...

    • Traumatic Brain Injury Tied to Risk of Parkinson's Disease

      A traumatic brain injury with loss of consciousness may increase the risk of developing Parkinson's disease, according to research published online July 11 in JAMA Neurology. More...

    • Delays in Spotting Dementia Can Bring Dangers

      Seniors with memory issues are still driving, cooking and doing other potentially unsafe tasks, study says. More...

    • Loss of Y Chromosome in Men Tied to Alzheimer's Risk

      Study raises provocative questions, expert says. More...

    • Long-Term Warfarin Use Tied to Increased Dementia Risk

      Patients with atrial fibrillation may have a heightened risk of developing dementia -- and the quality of their anticoagulation treatment may play a role, according to findings presented at the annual meeting of the Heart Rhythm Society, held from May 4 to 7 in San Francisco. More...

    • Widely Used Heart Drug Tied to Dementia Risk

      Both warfarin and the atrial fibrillation it's often used to treat may raise risk, study suggests. More...

    • Home-Based Care Teams Offer Help for Those With Dementia

      Coordinated effort boosts quality of life, delays need for nursing home, study finds. More...

    • Deep Brain Stimulation May Hold Promise in Alzheimer's

      The use of deep brain stimulation may provide benefits in patients with Alzheimer's disease by influencing pathological brain activity, according to research published online Aug. 4 in the Annals of Neurology. More...

    • Lifestyle Changes Are No Guarantee Against Alzheimer's

      Panel finds inconclusive evidence that diet, exercise, supplements prevent dementia. More...

Share This