Resources
Major Types of Dementia
Alzheimer's disease
- Most common type of dementia, accounting for about two-thirds of cases.
- Caused by:
◦ Plaques made of beta-amyloid protein
◦ Tangles made of tau protein
◦ These changes disrupt normal brain cell function.
Common Symptoms
- Short-term memory loss (usually the first symptom)
- Difficulty learning new information
- Problems with thinking and organizing
- Poor judgment
- Confusion
- Difficulty speaking
- Personality and behavior changes
Additional Facts
- Brain changes begin many years before symptoms appear.
- Average life expectancy: 8–12 years after diagnosis
Vascular dementia
- Caused by reduced blood flow to the brain from:
◦ One major stroke, or
◦ Multiple small strokes
Symptoms
Symptoms depend on the area of the brain affected and may include:
- Confusion
- Disorientation
- Trouble speaking or understanding
- Difficulty walking
- Sudden headache
- Weakness, numbness, or paralysis on one side of the body or face
Additional Facts
- Symptoms may appear suddenly or worsen in steps.
- Life expectancy depends on the severity and type of stroke.
Dementia with Lewy bodies
- Second most common type of dementia.
- Accounts for about 20% of dementias.
- Caused by abnormal protein deposits called Lewy bodies made of alpha-synuclein.
Key Features
- Cognitive symptoms appear before movement problems.
- Shares similarities with Parkinson’s disease dementia.
Common Symptoms
- • Vivid visual hallucinations
- • Fluctuating alertness and attention
- • Parkinson-like movement symptoms:
- Stiffness
- Shuffling or unsteady gait
- Flexed posture
- High risk of falls
- Visuospatial and executive functioning problems occur earlier than memory loss.
Additional Facts
- Average life expectancy: about 7 years after symptoms begin
Frontotemporal dementia
- Accounts for 10–15% of dementias.
- Affects the frontal and temporal lobes.
- Usually occurs at a younger age (45–60 years old).
- Associated with abnormal tau protein buildup.
Frontotemporal dementia
Behavioral Variant FTD
Symptoms include:
- Loss of empathy
- Poor judgment or inhibition
- Apathy
- Obsessive behaviors
- Overeating
- Impulsivity
Primary Progressive Aphasia
Language-related problems such as:
- Difficulty understanding language
- Problems speaking
- Difficulty reading or writing
Frontotemporal Movement Disorders
Movement-related symptoms:
- Muscle rigidity and stiffness
- Balance and walking problems
- Difficulty swallowing
- Restricted eye movements
Additional Facts
- Average life expectancy: 2–10 years after diagnosis
Summary of Neurological Disorders and Cognitive Conditions
Parkinson's disease
Causes
- Destruction of dopamine-producing nerve cells
- Associated with abnormal protein deposits called Lewy bodies (alpha-synuclein)
Early Symptoms
- Resting tremor
- Shuffling gait
- Stooped posture
Later Symptoms
- Memory loss
- Difficulty paying attention
- Poor judgment
Additional Facts
- Usually develops gradually after age 50.
- More common in men than women.
Wernicke-Korsakoff syndrome
A condition caused by vitamin B1 (thiamine) deficiency, commonly linked to alcoholism and
malnutrition
Two Stages
Wernicke’s Encephalopathy (acute stage)
- Confusion
- Abnormal eye movements
- Poor muscle coordination
Korsakoff’s Syndrome (chronic stage)
- Severe memory loss
- Inability to form new memories
- Hallucinations
Treatment
- Stop alcohol consumption
- Vitamin B1 replacement
Important Fact
- Many symptoms improve, but memory loss is often permanent.
Postoperative cognitive dysfunction
Greater Risk In
- Undiagnosed dementia
- Mild Cognitive Impairment (MCI)
Possible Symptoms
- Memory problems
- Reduced concentration
- Poor comprehension
- Language difficulties
Research Findings
- No major difference between local vs. general anesthesia risk.
- Surgery length is not a major factor.
- Higher risk after open-heart surgery.
- Patients with POCD at discharge have a higher risk of death within 3 months after
surgery.
Huntington's disease
Cause
- A hereditary brain disorder caused by a defective gene.
Affects
- Movement
- Mood
- Thinking abilities
Additional Facts
- Symptoms usually appear between ages 30–50.
- Progressive and fatal.
- Average life expectancy: about 15 years after diagnosis
Mixed dementia
Occurs when more than one type of dementia affects the brain at the same time.
Common Combinations
- Alzheimer’s disease
- Vascular dementia
- Dementia with Lewy bodies
Symptoms
May include:
- Memory loss
- Poor reasoning
- Movement problems
- Confusion
Important Facts
- More common than once believed.
- Many people have both Alzheimer’s disease and vascular dementia.
- Combined diseases may damage the brain more severely than one disease alone.
- Life expectancy varies depending on the dementia types involved.
Traumatic brain injury
Caused by a blow or impact to the head that disrupts brain function.
Common Causes
- Falls
- Car accidents
Severity Levels
- Mild
- Moderate
- Severe
Brain Damage May Include
- Skull fracture
- Brain bleeding
- Swelling
- Blood clots
- Shearing injuries
Symptoms
- Loss of consciousness
- Confusion/disorientation
- Memory problems
- Headache
- Dizziness
- Blurred vision
- Nausea/vomiting
- Ringing in ears
- Trouble speaking clearly
- Emotional and sleep changes
Effects Depend On
- Type of injury
- Amount of brain tissue damage
- Pressure inside the skull
usefull guides and videos
Advance Care Planning
Age-Related Forgetfulness or Signs of Dementia?
Caring for a Person With Alzheimer's Disease
Enhancing Cognitive Longevity
Exercise
Brief 20-minute sessions of cardiovascular activity can trigger critical 'brain ripples' that improve long-term memory and information processing.
Meditation
Studies indicate that a daily meditation routine can boost cerebral circulation
Manage your nutrition
Incorporate an Anti-Inflammatory diet to include fish, fresh fruits and vegetables. Prioritize your inner health to nurture your peace and stay emotionally and mentally balanced
Get Involved
Stimulation through active social engagement boosts brain longevity.
Nurturing relationships and communal activities keeps the mind
sharp and spirits high.
Active social participation builds cognitive reserve, protecting
against decline.
Fostering strong social ties and shared hobbies enhances mental
resilience.
Community involvement and regular peer interaction are
protective factors for cognitive health.
Useful Links
National Institute on Aging (NIA)
Provides comprehensive educational materials, research updates, and free, printable publications.
Alzheimer's Association
Offers in-depth content on symptoms, diagnosis, and caregiving, plus a 24/7 helpline and ALZ Talks webinars.
Alzheimer’s Foundation of America
Features fact sheets and expert information on dementia care.
AARP
Provides practical guides on safety, care options, and legal checklists.