Brain & Nervous System Alzheimer's Symptoms Alzheimer's Guide Alzheimer's Guide Symptoms Causes Diagnosis Treatment Coping Prevention Signs and Symptoms of Alzheimer's Disease By Esther Heerema, MSW Esther Heerema, MSW Facebook LinkedIn Twitter Esther Heerema, MSW, shares practical tips gained from working with hundreds of people whose lives are touched by Alzheimer's disease and other kinds of dementia. Learn about our editorial process Updated on September 20, 2021 Medically reviewed Verywell Health articles are reviewed by board-certified physicians and healthcare professionals. These medical reviewers confirm the content is thorough and accurate, reflecting the latest evidence-based research. Content is reviewed before publication and upon substantial updates. Learn more. by Diana Apetauerova, MD Medically reviewed by Diana Apetauerova, MD LinkedIn Diana Apetauerova, MD, is board-certified in neurology with a subspecialty in movement disorders. She is an associate clinical professor of neurology at Tufts School of Medicine. Learn about our Medical Expert Board Print Table of Contents View All Table of Contents Frequent Symptoms By Stage Complications When to See a Doctor Frequently Asked Questions Next in Alzheimer's Guide Understanding the Causes and Risk Factors of Alzheimer's Disease Memory loss and confusion are the two key symptoms of Alzheimer's disease. While anyone can have an episode of being unable to remember a name or where they put their keys, there is a significant difference between being absent-minded or preoccupied and having a true progressive memory problem such as Alzheimer's disease. For example, these instances could be symptoms of Alzheimer's disease or another concerning cognitive issue: You lose your keys. When they're found, you have no recollection of how they might have gotten there.You always were a fantastic cook, but lately even making coffee seems more difficult. You wonder who has been messing around with your coffeemaker.You're great at covering for yourself. For example, when someone asks you a question to which you don't know the answer, you turn the question around by saying with a chuckle, "I'm not sure. What do you think?"You've had a hard time recently balancing your checkbook, even though that's always been your job. If these symptoms paint a picture of you or someone you love, seek an evaluation from a physician, geriatrician, or psychologist. Frequent Symptoms The Alzheimer's Association has identified 10 warning signs of Alzheimer's disease: Memory changesWithdrawal from usual activitiesDisorientation to time and placeVisual-spatial difficultiesDecrease in written or verbal communication abilityChallenges in problem-solving and planningPersonality and mood changesMisplacing items frequentlyDecline in judgmentDifficulty performing familiar tasks The Four As Alzheimer's disease has also been described using four words that begin with A:Amnesia: Memory lossAphasia: Impaired communicationApraxia: Physical functioning (motor skills)Agnosia: Difficulty understanding information from the senses, such as vision or smell Understanding the 4 As of Alzheimer's By Stage While Alzheimer's disease has been described as having seven stages, the symptoms of Alzheimer's can be collapsed into three broad stages: early, middle, and late. Remember that symptoms can overlap and may vary in each person with Alzheimer's. Early (Mild)-Stage Symptoms Difficulty with tasks such as balancing a checkbook or making dinner Difficulty learning new tasks Slower reaction time when driving or making decisions Occasional difficulty finding words Short-term memory impairment Increased irritability, anxiety, or depression Often an awareness of these changes In early-stage Alzheimer's, individuals may still function quite well overall. Although they may be aware of the increasing difficulty with certain tasks, they are also often quite skilled at hiding this from others by deflecting questions, changing the topic, or relying on their family or loved ones to make decisions or answer questions. Some persons also begin to withdraw, perhaps due to their uncertainty over their ability to cope with decisions or social interaction. In early-stage Alzheimer's, long-term memory typically remains intact. Eary Signs of Alzheimer's Disease Middle (Moderate)-Stage Symptoms Significant personality changes, such as being argumentative, impulsive, angry Resistant to, or combative with, physical care, even (sometimes especially) when provided by a loved one Short-term and long-term memory loss Increased difficulty in communicating with others A "love-hate" relationship with their caregivers; for example, extreme dependence on a spouse or adult child who they also are very unkind to Potential for wandering away from home Very poor judgment and decisions Possible incontinence Often, one's physical abilities—such as their ability to walk around—still remain intact in this stage. Mid-stage Alzheimer's is often the most difficult stage. While some individuals remain "pleasantly confused" throughout the entire disease, many display inappropriate behaviors and emotions. They may be quite restless and become paranoid, have hallucinations, or refuse to let you help them with a bath or getting dressed. They may get up several times in the night, and rummage through the same drawers repeatedly. This middle stage of Alzheimer's can be very taxing for the primary caregiver, and this is often when in-home help is hired or the person is placed in a facility, such as an assisted living or a nursing home. Symptoms in the Middle Stages of Alzheimer's Disease Late (Severe)-Stage Symptoms Decreased ability to interact with others Diminished ability to recognize people Physical decline, such as inability to walk or talk Difficulty with eating, even with assistance Apparent withdrawal from surroundings Incontinence In this final stage of Alzheimer's, people often are quite immobile and spend much of their time in bed or a wheelchair. They are no longer able to respond much to others, although you may occasionally receive a smile or hear some attempts at language. Verywell / JR Bee The behavior challenges of mid-stage Alzheimer's are replaced with what looks like complete withdrawal. However, these individuals can still benefit from gentle conversation, holding their hand, giving them a hug, visual stimulation such as colors and pictures, and especially hearing music. Individuals with late-stage Alzheimer's become more prone to illnesses as the body loses strength. Often, infections like pneumonia eventually cause their death. Complications/Sub-Group Indications While Alzheimer's disease most often presents symptoms after age 65, early-onset Alzheimer's disease is seen in about 5% of cases. Early onset dementia often affects people as young as those in their 40s and 50s. The symptoms are similar and are most apparent when someone is performing a job or task. Because the onset is gradual, the symptoms might be dismissed as being due to stress or depression. However, early detection of cognitive impairment can help determine the cause and lead to earlier treatment. Familial Alzheimer's disease often has early onset. This type is linked to specific genes and affects at least two generations. It occurs in less than 3% of all cases of Alzheimer's disease. Complications of Alzheimer's disease include an increased risk of falling and a higher risk of hip fractures from falls. Remaining as active as possible, for as long as possible, may help delay some of the physical changes in motor functioning that develop in Alzheimer's. As Alzheimer's can cause someone to engage in unsafe behaviors such as wandering, losing concentration when driving, and leaving a stove burner on, it's also important to be aware of other injuries that may result. Bladder and bowel problems may also develop as the person doesn't recognize urges, has limited mobility, or is confused as to where the bathroom is. There can also be difficulty in eating, drinking, and swallowing, leading to aspiration pneumonia, choking, malnutrition, and dehydration. How the 13 Types of Dementia Differ When to See a Doctor If you see yourself or your loved one described in these symptoms, contact your physician to arrange for an evaluation. Diagnosing Alzheimer's disease involves several tests to rule out other conditions and is an important first step in treatment and management of the disease. Know, though, that not all problems with cognition (the ability to think and remember) are due to Alzheimer's disease or other forms of dementia. This is one of many reasons why it's important to see your physician if you're experiencing these symptoms. A Word From Verywell Affecting more than 5 million people in the United States alone, Alzheimer's disease is far from uncommon. However, because Alzheimer's disease affects the mind and many other conditions affect the body, there can be a greater fear and stigma about the disease. Unfortunately, this can cause people to hide and ignore symptoms, delay treatment, or simply isolate themselves. Hold on to the knowledge that there is no blame or shame in an Alzheimer's diagnosis. Instead, by seeking support, you can gain strength, knowledge, and hope while living with Alzheimer's disease. Frequently Asked Questions What Is Alzheimer’s Disease? Alzheimer’s disease is a neurodegenerative disorder that usually starts slowly and progressively worsens, leading to symptoms of dementia and eventually the loss of bodily functions. It is the most common cause of cognitive decline in adults, usually affecting people over the age of 65. What causes Alzheimer’s Disease? Alzheimer’s disease is poorly understood but is believed to be linked in part to genetics. The disease is characterized by the formation of plaques on the brain along with the development of twisted fibers (called neurofibrillary tangles) that block the flow of nutrients to brain cells, eventually killing them. A history of head injury, clinical depression, and high blood pressure are also linked to the disease. What are the early signs of Alzheimer’s Disease? Early symptoms of Alzheimer’s are often dismissed as “signs of aging” and can include short-term memory loss, loss of attentiveness, problems with planning, apathy, and depression. The signs become more noticeable when word fluency, fine motor skills, and short-term recall start to become affected. What are the stages of Alzheimer’s Disease? The course of Alzheimer’s can differ from one person to the next but tend to occur in the following 7 stages:Stage 1: Largely asymptomatic with changes only detected on a PET scanStage 2: Very mild changes that don’t affect daily functioningStage 3: Mild decline with more noticeable changes in memory and cognitionStage 4: Moderate decline that may affect a person’s ability to drive or manage their financesStage 5: Moderately severe decline characterized by the loss of independenceStage 6: Severe declines that require assistive careStage 7: Very severe decline marked by the lack of physical control and the need for around-the-clock care Learn More: What to Know About Telehealth for Alzheimer’s Disease How fast does Alzheimer’s develop? It can vary. Some people may have mild cognitive problems for many years before Alzheimer’s is officially diagnosed. After the diagnosis, the progression of the disease—from stage 1 to stage 7—can range anywhere from four to eight years on average. Some people have lived for far longer. Can Alzheimer’s be cured? Not at present. However, there are treatments that may improve symptoms in some people. These include cholinesterase inhibitors like Aricept (donepezil), Razadyne (galantamine), and Exelon (rivastigmine) that may improve communication between nerve cells. Memantine (marketed under the brand name Namenda and others) may help reduce calcium build-up and the formation of plaques. Learn More: How Alzheimer's Disease Is Treated Can Alzheimer’s kill you? Alzheimer’s disease is the sixth-leading cause of death in the United States. The progressive destruction of nerve connections in the brain can disrupt vital functions like swallowing. The majority of Alzheimer's deaths are due to aspiration pneumonia when food or liquid enters the windpipe and causes damage or infection in the lungs leading to pneumonia. Was this page helpful? Thanks for your feedback! When it comes to Alzheimer's, the MIND diet has shown promise in reducing risk and promoting brain health. Sign up for our Alzheimer’s and Dementia Newsletter and get your free recipe guide today. Sign Up You're in! Thank you, {{form.email}}, for signing up. There was an error. Please try again. What are your concerns? Other Inaccurate Hard to Understand Submit 14 Sources Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. Alzheimer’s Association. 10 Early Signs and Symptoms of Alzheimer's. Melnick VL, Dubler NN. Alzheimer’s Dementia, Dilemmas in Clinical Research. Springer Science & Business Media; 2012. Li XL, Hu N, Tan MS, Yu JT, Tan L. Behavioral and psychological symptoms in Alzheimer's disease. Biomed Res Int. 2014;2014:927804. doi:10.1155/2014/927804 Dassa A, Amir D. 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Alzheimer’s disease: rapid and slow progression. J R Soc Interface. 2012;9(66):119-26. doi:10.1098/rsif.2011.0134 Parnetti L, Chipi E, Salvadori N, D’Andrea K, Eusebi P. Prevalence and risk of progression of preclinical Alzheimer’s disease stages: A systematic review and meta-analysis. Alz Res Therapy. 2019;11(1):7. doi:10.1186/s13195-018-0459-7 Alzheimer's Association. Stages of Alzheimer's. James BD, Leurgans SE, Hebert LE, Scherr PA, Yaffe K, Bennett DA. Contribution of Alzheimer disease to mortality in the United States. Neurology. 2014;82(12):1045-50. doi:10.1212/WNL.0000000000000240 Manabe T, Fujikura Y, Mizukami K, Akatsu H, Kudo K. Pneumonia-associated death in patients with dementia: A systematic review and meta-analysis. PLoS ONE. 2019;14(3):e0213825. doi:10.1371/journal.pone.0213825 Additional Reading Alzheimer's Association. Stages of Alzheimer's. U.S. National Institutes on Health. National Institute on Aging. About Alzheimer's Disease: Symptoms.