About Dementia

Dementia is not a normal part of aging—it is not inevitable. It is more than mere forgetfulness. Dementia is a collection of diseases that share four characteristics:

They are not acute
They affect memory

They cause a decline in one’s ability to function
They cause cells in the brain to die, shrinking the size of the brain over time

There are four types of dementia, each with distinct triggers and symptoms.

Alzheimer’s: The most prevalent type, Alzheimer’s accounts for 60 percent of newly diagnosed dementias today. Difficulty with short-term memory, procedures, and naming are typical symptoms.

Vascular: Vascular dementia occurs when blood vessels above the neck that carry oxygen to the brain are blocked, causing brain tissue to die. Difficulty concentrating, finding words, or completing complex tasks are initial red flags.

Lewy-Body: This type of dementia progresses much faster than Alzheimer’s. Early signs mimic Parkinson’s Disease—stiffness in the extremities, difficulty with gait and balance, and problems with cognition.

Fronto-Temporal: The least common type of dementia, fronto-temporal affects parts of the brain that control behavior, personality, and the ability to complete complex tasks. Early symptoms include abnormal social behavior, aggression, and grandiosity.

Symptoms

Progressive brain cell death due to Alzheimer’s disease is the most common cause of dementia. Other causes include:

Memory loss is less about memories disappearing and more about an inability to effectively create new memories for recent events. People with this type of “working” memory loss ask the same question repeatedly.

Naming difficulty is an inability to retrieve words stored in the recesses of the mind. In normal aging, cues will help one recall a forgotten word quickly, or the person will remember it on his own. For someone with dementia, cuing isn’t effective, and the word doesn’t come to her mind later.

Causes

People with dementia typically exhibit two early warning signs: difficulty with short-term memory and difficulty with naming. These symptoms are red flags signaling the beginning stages of dementia.

Stroke
Brain tumor
Traumatic head injury

Most dementias are not curable. For the less than five percent of dementias that accompany other well-known diseases such as Huntington’s Disease, Down Syndrome, and Syphilis, a small number are potentially reversible including B12 deficiency, normal pressure hydrocephalus, and severe hypothyroidism.

About Dementia

There are four types of dementia, each with distinct triggers and symptoms.

Symptoms

Causes

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