Dementia & Alzheimer’s Disease: Therapy, Rehabilitation, and Caregiver Support

Table of Contents

1. What Is Dementia and Alzheimer’s Disease?
2. Types of Dementia
3. Who Is Affected?
4. Signs, Symptoms, and Stages
5. Who Provides Care for People with Dementia?
6. Occupational Therapy and Dementia
7. Cognitive Rehabilitation and Stimulation
8. Exercise and Physical Activity
9. Behavioral and Psychological Symptoms
10. Supporting Caregivers
11. What Families Can Do
12. A Note for Clinicians
13. References

1. What Is Dementia and Alzheimer’s Disease?

Dementia is a general term for a collection of conditions that affect the brain, causing progressive decline in memory, thinking, behavior, and the ability to perform everyday activities. It is not a single disease but a syndrome — a group of symptoms that can result from several different underlying conditions (Alzheimer’s Association, 2025).

Alzheimer’s disease is the most common cause of dementia, accounting for 60–80% of all cases. It is a progressive neurodegenerative (brain cell-destroying) disorder characterized by the accumulation of abnormal protein deposits — amyloid plaques and tau tangles — in the brain. These changes disrupt communication between brain cells and eventually lead to cell death, causing the cognitive and functional decline that defines the disease (Smallfield et al., 2024).

A critical point for both patients and families: dementia is not a normal part of aging. While age is the greatest known risk factor, dementia results from specific disease processes — not simply from getting older. This distinction matters because it means dementia has identifiable risk factors, early warning signs, and evidence-based interventions that can meaningfully improve quality of life even when a cure is not possible (Smallfield et al., 2024; Alzheimer’s Association, 2025).

2. Types of Dementia

While Alzheimer’s disease is the most common form, several other types of dementia have distinct causes, symptoms, and progression patterns. Understanding the type of dementia affecting an individual is important for planning appropriate care and therapy (Smallfield et al., 2024).

• Alzheimer’s disease: The most common form. Early symptoms typically include memory loss for recent events, difficulty with word-finding, and getting lost. Caused by amyloid plaques and tau tangles in the brain.
• Vascular dementia: The second most common type. Results from reduced blood flow to the brain, often following a stroke or series of small strokes (mini-strokes). Symptoms may include sudden onset, stepwise decline, and prominent difficulties with planning and judgment.
• Lewy body dementia (LBD): Caused by abnormal protein deposits (Lewy bodies) in brain cells. Characterized by fluctuating cognition, visual hallucinations, sleep disturbances, and movement symptoms similar to Parkinson’s disease.
• Frontotemporal dementia (FTD): Affects the frontal and temporal lobes of the brain. Most common in adults under 65. Prominent early symptoms include personality changes, disinhibition (loss of social restraint), and language difficulties rather than memory loss.
• Mixed dementia: A combination of two or more dementia types, most commonly Alzheimer’s and vascular dementia, occurring simultaneously.
• Parkinson’s disease dementia: Cognitive decline that develops in the later stages of Parkinson’s disease. See our Parkinson’s Disease page for more information.

Each type of dementia has distinct implications for rehabilitation. Occupational therapists, speech-language pathologists, and physical therapists adapt their approaches based on the type, severity, and individual presentation of dementia (Smallfield et al., 2024).

3. Who Is Affected?

Dementia is a global public health priority. More than 55 million people worldwide are currently living with dementia, with approximately 10 million new cases diagnosed every year (Smallfield et al., 2024). In the United States specifically:

• An estimated 7.2 million Americans aged 65 and older are living with Alzheimer’s dementia in 2025 — approximately 1 in 9 adults in this age group (Alzheimer’s Association, 2025)
• 74% of those with Alzheimer’s are aged 75 or older; the likelihood of having Alzheimer’s increases sharply with age (Alzheimer’s Association, 2025)
• Almost two-thirds of Americans with Alzheimer’s are women (Alzheimer’s Association, 2025)
• Older Black Americans are approximately twice as likely to have Alzheimer’s or other dementias as older White Americans; older Hispanic Americans are about one and a half times as likely (Alzheimer’s Association, 2025)
• Alzheimer’s disease is the sixth-leading cause of death in the United States. Between 2000 and 2022, deaths attributed to Alzheimer’s increased by more than 142% (Alzheimer’s Association, 2025)
• The total cost of caring for people with Alzheimer’s and other dementias in the U.S. is projected to reach $384 billion in 2025, rising to nearly $1 trillion by 2050 (Alzheimer’s Association, 2025)
• Without medical breakthroughs to prevent or cure the disease, the number of Americans living with Alzheimer’s could grow to 13.8 million by 2060 (Alzheimer’s Association, 2025)

4. Signs, Symptoms, and Stages

Dementia typically progresses through stages, though the rate and pattern of decline vary significantly by individual and dementia type. Understanding the stage of dementia helps clinicians, families, and therapists plan the most appropriate and effective care (Smallfield et al., 2024).

Early stage (mild dementia):

• Noticeable memory lapses, particularly for recent events and newly learned information
• Difficulty finding words or following conversations
• Getting lost in previously familiar places
• Difficulty with complex tasks such as managing finances, following multi-step recipes, or planning events
• The person remains largely independent but may need reminders or assistance for complex activities

Middle stage (moderate dementia):

• Significant memory loss including for personal history and names of close family members
• Increasing confusion about time, place, and current events
• Need for assistance with activities of daily living (ADLs) such as dressing, bathing, and meal preparation
• Behavioral and psychological symptoms such as agitation, wandering, sleep disturbances, and mood changes become more prominent
• Supervision is typically required for safety

Late stage (severe dementia):

• Severe memory loss and near-total dependence on caregivers for all daily activities
• Loss of ability to communicate verbally
• Physical decline including difficulty swallowing (dysphagia), mobility loss, and increased susceptibility to infection
• Full-time care is required

5. Who Provides Care for People with Dementia?

Effective dementia care requires a multidisciplinary (many-specialist) team because dementia affects nearly every domain of human function. Care should be coordinated, individualized, and adjusted as the condition progresses (Smallfield et al., 2024).

• Occupational therapy (OT): ADL assessment and training, cognitive rehabilitation, home modification, caregiver education, and behavioral strategies
• Physical therapy (PT): Mobility, balance, fall prevention, and exercise programming
• Speech-language pathology (SLP): Communication support, cognitive-communication strategies, and swallowing assessment and management
• Neuropsychology: Comprehensive cognitive assessment and behavioral intervention
• Neurology/geriatric medicine: Diagnosis, medication management, and medical care coordination
• Social work: Care planning, community resource connection, and caregiver support
• Psychiatry/psychology: Management of behavioral and psychological symptoms of dementia (BPSD)

Evidence strongly supports a coordinated, multidisciplinary approach. The AJOT Practice Guidelines for Alzheimer’s disease and related neurocognitive disorders emphasize that OT practitioners are uniquely positioned to address the intersection of cognitive, physical, and environmental factors that affect functional performance and quality of life in this population (Smallfield et al., 2024).

6. Occupational Therapy and Dementia

Occupational therapy plays a central role in dementia care across all stages. OT focuses on enabling people with dementia to participate as fully and safely as possible in meaningful daily activities — and on supporting the caregivers who help them do so (Smallfield et al., 2024).

Key OT interventions for people with dementia include:

• ADL assessment and training: Evaluating and adapting routines for dressing, bathing, meal preparation, medication management, and toileting to maximize independence and safety
• Environmental modification: Modifying the home and living environment to reduce confusion, minimize hazards, support wayfinding (finding one’s way), and compensate for cognitive deficits
• Cognitive compensation strategies: Teaching the use of external memory aids such as calendars, whiteboards, labeled drawers, daily checklists, and structured routines
• Activity engagement: Identifying and supporting participation in meaningful activities that match current abilities — a key driver of quality of life and behavioral stability
• Fall prevention: Assessing fall risk and implementing home modifications, adaptive equipment, and safe mobility strategies. See our Fall Prevention page for more information.
• Caregiver training: Teaching caregivers effective communication strategies, safe assistance techniques, and how to structure meaningful activities

A systematic review and meta-analysis of 15 randomized controlled trials (n=2,063) found that people with dementia receiving OT at home showed significant improvements in overall ADL performance, instrumental activities of daily living (IADLs), and behavioral and psychological symptoms of dementia compared to those receiving usual care. Family caregivers reported fewer behavioral symptoms and better quality of life (Dow et al., 2019).

The 2024 AJOT Practice Guidelines — based on a systematic review of 12 systematic reviews — provide strong and moderate evidence supporting reminiscence therapy, exercise, nonpharmacological behavioral interventions, cognitive therapy, sensory interventions, and caregiver education and training as effective OT approaches for people with Alzheimer’s disease and related neurocognitive disorders (Smallfield et al., 2024).

7. Cognitive Rehabilitation and Stimulation

Cognitive rehabilitation and cognitive stimulation are among the most studied non-pharmacological interventions for people with dementia. These approaches target the thinking and memory difficulties that are central to the condition (Smallfield et al., 2024; Ren et al., 2024).

Three distinct approaches are used clinically:

• Cognitive rehabilitation (CR): An individualized, goal-oriented approach that focuses on helping the person achieve specific functional goals that are personally meaningful — such as learning to use a memory diary, safely preparing a simple meal, or managing a medication routine. CR emphasizes real-world function rather than scores on tests.
• Cognitive stimulation (CS): A structured group or individual program of themed activities and discussions designed to stimulate thinking, concentration, and memory. Evidence supports CS as effective for improving cognition and quality of life in mild to moderate dementia.
• Cognitive training (CT): Practice on standardized tasks targeting specific cognitive domains such as memory, attention, or processing speed. Evidence for CT in dementia is more mixed than for CR or CS.

A 2024 systematic review and meta-analysis of 14 clinical trials found that cognitive rehabilitation significantly improved quality of life (WMD: 2.87; 95% CI: 0.79–4.95; p=0.007) and occupational performance levels (WMD: 1.53; 95% CI: 0.43–2.63; p=0.007) in patients with Alzheimer’s disease, though effects on specific cognitive domains were more variable (Ren et al., 2024). The AJOT Practice Guidelines provide strong evidence supporting cognitive therapy as an OT intervention for adults living with Alzheimer’s disease and related neurocognitive disorders (Smallfield et al., 2024).

8. Exercise and Physical Activity

Exercise is one of the most strongly supported non-pharmacological interventions for people with dementia. Evidence consistently shows that physical activity improves cognitive function, reduces behavioral symptoms, and supports activities of daily living in people with Alzheimer’s disease — even in moderate and advanced stages (Yuan et al., 2024; Smallfield et al., 2024).

A 2024 Bayesian network meta-analysis of 27 randomized controlled trials involving 2,242 AD patients found a nonlinear relationship between exercise dose and cognitive improvement in Alzheimer’s disease. Multimodal exercise — combining aerobic activity, strength training, and balance work — was among the most effective intervention types (Yuan et al., 2024). Physical exercise has also been shown to significantly improve activities of daily living in people with AD (SMD = 0.312, 95% CI 0.039–0.585), with strength and balance training of 12–16 weeks at 30–45 minutes per session demonstrating particularly consistent benefits for basic ADL performance (Smallfield et al., 2024).

Exercise benefits for people with dementia include:

• Improved or maintained cognitive function, including global cognition, attention, and executive function
• Reduced neuropsychiatric symptoms including agitation, depression, and anxiety
• Improved quality of life and mood (Yuan et al., 2024)
• Maintained or improved mobility, balance, and fall prevention — a critical safety concern in this population
• Maintained independence in basic ADLs for longer (Smallfield et al., 2024)

Physical therapy and OT collaborate in designing and supervising exercise programs that are appropriately adapted to the person’s cognitive and physical abilities. Walking, group exercise, dance, Tai Chi, and gardening have all been studied as beneficial activities in this population.

9. Behavioral and Psychological Symptoms of Dementia

Behavioral and psychological symptoms of dementia (BPSD) — sometimes called neuropsychiatric symptoms — affect up to 90% of people with dementia at some point during the illness. BPSD include agitation, aggression, wandering, sleep disturbances, depression, anxiety, apathy (reduced motivation), delusions (false beliefs), and hallucinations (Smallfield et al., 2024).

These symptoms are neurological in origin — they result directly from the brain changes of dementia — and are not willful behaviors or character flaws. They are often the most distressing aspect of dementia for both the person living with the condition and their caregivers, and they are a major driver of nursing home placement (Smallfield et al., 2024).

Evidence-based non-pharmacological approaches to BPSD include:

• Tailored Activity Program (TAP): An OT-designed intervention that identifies the person’s preserved abilities and interests and creates activities specifically matched to their current cognitive level, reducing agitation and improving engagement (Smallfield et al., 2024)
• Environmental modification: Reducing noise, overstimulation, and confusion in the environment; improving lighting and visual cues; creating safe wandering paths
• Structured routine: Consistent daily schedules reduce confusion, agitation, and behavioral disturbance
• Sensory interventions: Music therapy, aromatherapy, and multisensory environments have evidence for reducing agitation and improving mood (Smallfield et al., 2024)
• Caregiver communication training: Teaching caregivers to use simple, clear language, approach from the front, use distraction and redirection, and respond to the emotional content of communication rather than its literal accuracy

Non-pharmacological approaches are recommended as first-line treatment for BPSD before pharmacological options are considered, given the modest benefits and significant risks of antipsychotic medications in older adults with dementia (Smallfield et al., 2024).

10. Supporting Caregivers

Nearly 12 million Americans provide unpaid care for people with Alzheimer’s disease or other dementias. In 2024, these caregivers provided an estimated 19.2 billion hours of care — valued at more than $413 billion (Alzheimer’s Association, 2025). Caregiver burden is significant, well-documented, and frequently undertreated.

Family caregivers of people with dementia experience significantly higher rates of depression, anxiety, and physical health problems than non-caregiving peers. The progressive and unpredictable nature of dementia, combined with the behavioral symptoms and the gradual loss of the person as they were known, creates a unique and cumulative form of stress (Martínez-Campos et al., 2022).

Occupational therapy is directly effective for caregivers, not just the person with dementia. A 2022 scoping review of 31 studies found that OT interventions for caregivers of people with dementia — particularly home-based programs — reduced caregiver burden, depression, and stress, and improved quality of life and sense of competence. The most studied OT programs for caregivers include the Tailored Activity Program (TAP), the Environmental Skill-Building Program (ESP), and Advancing Caregiver Training (ACT) (Martínez-Campos et al., 2022).

Key OT caregiver interventions include:

• Education about the disease process, what to expect, and how to adapt care as the condition progresses
• Training in safe assistance techniques for bathing, dressing, transfers (helping the person move from one surface to another), and toileting
• Teaching communication strategies that reduce frustration and behavioral reactions
• Problem-solving support for specific challenging situations
• Guidance on creating structured, predictable daily routines
• Helping caregivers identify their own needs and connect with respite (temporary relief care) resources

11. What Families Can Do

Family involvement is consistently identified as one of the most important factors in dementia care outcomes. Families are not passive observers — they are active participants in assessment, intervention, and quality of life for the person with dementia (Martínez-Campos et al., 2022; Smallfield et al., 2024).

Practical steps families can take at any stage:

• Seek early evaluation: Cognitive changes that interfere with daily life warrant prompt medical evaluation. Earlier diagnosis allows for earlier intervention, better planning, and access to treatments that may slow progression.
• Learn about the condition: Understanding what type of dementia is present, what to expect, and what helps makes caregiving more effective and less frightening
• Create and maintain routines: Consistent daily schedules for waking, meals, activities, and bedtime reduce confusion and behavioral symptoms
• Simplify the environment: Remove clutter, add labels and visual cues, improve lighting, and create clear pathways to reduce confusion and fall risk
• Focus on preserved abilities: Support engagement in activities the person can still do rather than focusing only on what they have lost — this sustains dignity, confidence, and quality of life
• Plan ahead: Legal and financial planning, advance directives, and care preferences should be discussed while the person still has capacity to participate in decision-making
• Use available resources: Adult day programs, memory care support groups, respite services, and Alzheimer’s Association resources all support both the person with dementia and their family

12. A Note for Clinicians

Dementia care is most effective when initiated early, coordinated across disciplines, and adapted continuously as the condition progresses. The evidence base for non-pharmacological interventions — particularly OT, cognitive rehabilitation, exercise, and caregiver-directed interventions — has grown substantially in the past decade and now supports a strong clinical case for rehabilitation involvement across all stages of dementia (Smallfield et al., 2024; Ren et al., 2024; Yuan et al., 2024).

Functional assessment is indispensable. Standardized cognitive tests provide useful baseline data but frequently overestimate functional capacity. Observation of real-world task performance — cooking, medication management, financial tasks — reveals clinically significant deficits not captured by screening instruments alone. The gap between test performance and real-world function is a key clinical signal (Smallfield et al., 2024).

Caregiver assessment is as important as patient assessment. Caregiver burden, depression, and sense of competence are strongly predictive of both caregiver and patient outcomes. OT caregiver interventions — particularly the Tailored Activity Program, Environmental Skill-Building Program, and Advancing Caregiver Training — have the strongest evidence base and should be offered proactively rather than reactively (Martínez-Campos et al., 2022).

Exercise programming for people with dementia is underutilized in clinical practice relative to its evidence base. Physical activity improves cognition, reduces BPSD, maintains ADL function, and reduces fall risk — making it one of the highest-yield interventions available across stages of dementia. A 2024 network meta-analysis confirmed that multimodal exercise combining aerobic, resistance, and balance components produced the most consistent cognitive and functional benefits across 27 RCTs (Yuan et al., 2024).

13. References

1. Alzheimer’s Association. (2025). 2025 Alzheimer’s disease facts and figures. Alzheimer’s & Dementia, 21, e70122. https://pmc.ncbi.nlm.nih.gov/articles/PMC12040760/
2. Dow, B., Haslam, C., Scott, A., & Kinsella, G. (2019). Occupational therapy for people with dementia and their family carers provided at home: A systematic review and meta-analysis. BMJ Open, 9(10), e026308. https://pmc.ncbi.nlm.nih.gov/articles/PMC6858232/
3. Martínez-Campos, A., Compañ-Gabucio, L.-M., Torres-Collado, L., & García-de la Hera, M. (2022). Occupational therapy interventions for dementia caregivers: Scoping review. Healthcare, 10(9), 1764. https://pmc.ncbi.nlm.nih.gov/articles/PMC9498417/
4. Ren, S., Pan, F., & Jin, J. (2024). The effect of cognitive rehabilitation on daily functioning of patients with Alzheimer’s disease: A systematic review and meta-analysis of clinical trials. Frontiers in Neurology, 15, 1371298. https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2024.1371298/full
5. Smallfield, S., Metzger, L., Green, M., Henley, L., & Rhodus, E. K. (2024). Occupational therapy practice guidelines for adults living with Alzheimer’s disease and related neurocognitive disorders. American Journal of Occupational Therapy, 78(1), 7801397010. https://pubmed.ncbi.nlm.nih.gov/38306186/
6. Yuan, Y., Yang, Y., Hu, X., Zhang, L., Xiong, Z., Bai, Y., Zeng, J., & Xu, F. (2024). Effective dosage and mode of exercise for enhancing cognitive function in Alzheimer’s disease and dementia: A systematic review and Bayesian model-based network meta-analysis of RCTs. BMC Geriatrics, 24, 480. https://pmc.ncbi.nlm.nih.gov/articles/PMC11143595/

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