Dementia is an umbrella term for conditions associated with a progressive decline in cognitive abilities. These include memory, thinking, orientation, language, and the ability to manage daily activities.
The most common form is Alzheimer’s disease, a neurodegenerative disorder that usually begins gradually and progresses over years.
Dementia affects not only the individual concerned but also represents a significant emotional and organizational challenge for relatives. Early diagnosis allows for targeted therapeutic and supportive interventions.
Symptoms
Symptoms usually develop gradually and increase over time.
Early symptoms:
Forgetfulness (especially short-term memory)
Word-finding difficulties
Declining concentration
Disorientation in unfamiliar environments
Advanced symptoms:
Significant memory gaps
Difficulties with everyday tasks
Personality changes
Restlessness or mood swings
Loss of independence
Not every instance of forgetfulness indicates dementia — specialist medical evaluation is essential.
Types
Alzheimer’s dementia (most common form)
Vascular dementia (due to impaired blood flow to the brain)
Lewy body dementia
Frontotemporal dementia
Accurate differentiation is important for treatment planning and prognosis.
Causes
The causes vary depending on the type of dementia:
Neurodegenerative processes (e.g., protein deposits in Alzheimer’s disease)
Impaired blood flow to the brain
Genetic factors
Rarely: metabolic or vitamin deficiency conditions
Risk factors include advanced age, vascular diseases, diabetes, high blood pressure, and lack of physical activity.