Several neurological conditions fall under dementia. It affects the brain over time and the person loss its ability to think, remember, and reason clearly. According to the annual report of the Alzheimer's Association, about 1 in 9 people (11%) aged 65 and older have clinical Alzheimer’s dementia. And this percentage increases with age.
Core Categories of Signs and Symptoms of Dementia
The first signs of dementia are quiet and easy to explain away. Watch for patterns that repeat and start to disrupt routine.
Cognitive & Memory Changes
Short-term memory loss
Facing issues in communication
Getting lost in familiar surroundings
Trouble planning, organizing, following multi-step instructions
Behavioral & Psychological Changes
Delusions or hallucinations
Loss of social inhibitions or acting inappropriately
Increased irritability and anxiety
Loss of interest in hobbies
Physical & Motor Changes (Later Stages)
Balance problems, frequent falls, or shuffling gait.
Loss of coordination
Difficulty with motor tasks
What Causes Dementia?
In simple words, dementia develops when nerve cells stop working, lose their connections, and die.
National Institute of Neurological Disorders and Stroke explains that dementia usually occurs when certain proteins accumulate and clump in the brain.
Poor blood flow. Strokes, irregular heartbeat, high blood pressure, diabetes, and high cholesterol can reduce blood flow to the brain and cause vascular dementia.
Regional shrinkage. Frontotemporal dementia attacks the areas that govern behavior, decisions, and language.
Other conditions. Repeated head injuries, HIV, Huntington's disease, and Parkinson's disease can all lead to dementia symptoms.
How is dementia caused in older adults specifically? Age gives these processes decades to build, and age-related dementia often reflects several of them at once.
Types of Dementia and How They Differ
The most common types of dementia include:
People often wonder which is worse, dementia or Alzheimer's. Neither, because Alzheimer's is one cause of dementia and dementia is the category. Pace and severity depend on the specific disease and how early care starts.
How Doctors Diagnose Dementia
Healthcare experts use a combination of different approaches to diagnose dementia. It can include:
Doctors speaking with both the patient and a close family member or caregiver to establish the timeline.
Screening assessments and detailed neuropsychological testing.
Laboratory testing for vitamin deficiency or any infections.
MRI or CT scans to check for tumors, strokes, or bleeding.
Psychiatric evaluation to check if depression or another condition is present.
Risk Factors for Developing Dementia Later
Dementia risk factors are divided into non-modifiable factors and modifiable factors.
Non-Modifiable Risk Factors
Advanced Age: The single strongest risk factor. Risk doubles roughly every 5 years after age 65.
Gender: Women have a higher lifetime risk of developing Alzheimer’s disease, partly due to longer average life expectancy and post-menopausal hormonal changes.
Modifiable Risk Factors Across the Lifespan
Hypertension & High Cholesterol: Untreated high blood pressure in midlife damages delicate brain microvessels that causes Vascular dementia and Alzheimer's pathology.
Diabetes & Obesity: Insulin resistance and chronic low-grade inflammation impair glucose uptake.
Smoking: Increases oxidative stress and vascular damage.
Treatment and Management of Dementia
There is presently no cure for dementia. However, treatment and clinical management can slow down cognitive decline.
Cholinesterase inhibitors (donepezil, rivastigmine, galantamine) support memory and thinking for a time by improving communication between brain cells.
Memantine helps protect brain cells and may keep learning and memory problems from getting worse.
Lecanemab and donanemab remove amyloid from the brain in early Alzheimer's.
Condition-specific medicines treat specific problems in different types of dementia.
Speech and physical therapists help with movement, speech, and swallowing, and regular physical activity can improve the quality of life.
Can a Person Recover From Dementia?
For most true neurodegenerative forms of dementia (such as Alzheimer’s disease, Lewy body dementia, and Frontotemporal dementia), the damage to brain cells is permanent and cannot be reversed. Current treatments for these progressive conditions focus on managing symptoms and slowing cognitive decline.
How to Care For a Person Suffering From Dementia?
To care for a person suffering from dementia, you have to consider their emotions and feelings. Speaking to them with logic or reason can backfire.
Practical habits that you can build:
Call the person by name and make eye contact.
Give extra time to find words, without finishing every sentence.
Keep routines predictable and surroundings calm.
Treat sudden irritability as a message, since pain, hunger, or fear may sit behind it.
Counterproductive approach (What NOT to Do):
Arguing with facts
Overwhelming them with several options
Forcing them to do something they don't want to do
Discussing their decline and behavioral issues
Get Support for Dementia and Other Cognitive Disorders
The experts at Boston Neurobehavioral Associates can help you or your loved one with dementia and other cognitive disorders. Our clinicians offer cognitive screening, neuropsychological testing, medication management, and counseling to provide support for dementia.
Book an evaluation today and get complete support.
FAQs About Dementia
Is Dementia the Same as Alzheimer’s Disease?
No. Dementia is the umbrella term for the symptoms. Alzheimer's is the most common disease that causes it.
What Is the First Sign of Dementia?
Usually memory slips that start to disrupt daily life, such as repeating questions, losing words, or struggling with familiar tasks.
At What Age Can Dementia Start?
Most cases begin after 65. Young-onset dementia starts before 65 and, in rare cases, appears in a person's 30s or 40s.
Can Dementia Be Cured or Reversed?
Progressive types such as Alzheimer's cannot be cured. Treatable look-alikes, like vitamin deficiencies or fluid buildup, can improve with treatment.