Dementia is not a specific disease, but a general term that describes a gradual decline of mental ability that affects your intellectual and social skills to the point where daily life becomes difficult. Dementia can affect your memory, language skills and decision-making ability; impair your judgment and make you feel disoriented; and it may also affect your personality.
Dementia can be caused by many diseases that affect the brain. The most common cause of dementia is Alzheimer’s disease. Others include vascular, Lewy body, frontotemporal and mixed dementia. Types of dementia differ based on underlying causes and can affect specific symptoms and how it progresses.
Alzheimer’s disease is the most common cause of dementia. It represents 60% to 80% of all dementia cases and affects about 5% of people over age 65. It occurs more often with advanced age, affecting 20% to 25% of people over the age of 80. Although research is ongoing and there are many promising theories, currently it is unclear exactly what causes Alzheimer’s disease. Aging and genetics (family history) are considered the greatest risk factors for developing Alzheimer’s disease.
Vascular dementia is caused by reduced blood flow that causes cells in the brain to die. This can happen when the blood vessels in the brain are blocked by blood clots or fatty deposits, such as during a stroke. Vascular dementia accounts for about 10% of dementia cases. This disorder may result in sudden, stepwise decline or a more gradual loss of mental ability.
Lewy body dementia accounts for 5% to 15% of dementia cases. Lewy bodies are deposits of a protein that accumulate in the brain which can result in problems with mood, movement, thinking and behaviour. This type of dementia usually progresses quickly and symptoms often include visual hallucinations.
Frontotemporal dementia is caused by the breakdown of nerve cells in two specific parts of the brain, called the frontal and temporal lobes. This type of dementia accounts for 2 % of 5% of all dementia cases. It leads to changes in language abilities, personality, and behavior.
Dementia can also have mixed causes, especially at older ages. The most common mixed dementia is due to a combination of Alzheimer’s disease and vascular dementia.
Diseases such as Huntington’s disease, Parkinson’s disease, and Creutzfeldt-Jakob disease may eventually lead to symptoms of dementia. Dementia may also be caused by a number of factors that can damage the brain, such as alcoholism and drug use.
In some cases of dementia, it may be reversible or improved once the underlying cause has been treated. Unfortunately, when dementia is caused by conditions such as Alzheimer’s disease, brain injury, or blood vessel changes, the changes that occur are irreversible.
Treatment of dementia may depend on the specific cause. Treatment of Alzheimer’s disease usually involves treating the declining memory and gradually worsening behavioural symptoms with a range of medications (which may also be used in other forms of dementia), including:
There is no treatment that can "cure" Alzheimer’s disease, nor are there medication that can halt or reverse the brain damage caused by it. However, there are medications that can relieve symptoms and slow down the progression of the disease. Medications such as donepezil*, rivastigmine, and galantamine may be used to slow down memory loss.
Prevention of stroke is very important for vascular dementia. If you have high blood pressure or cholesterol, transient ischemic attacks (TIAs), or have had a stroke, you should seek continued treatment for these conditions to prevent future strokes.
The key to caring for and helping people with dementia is to focus on the many activities the person can still do safely. Encourage a person with dementia to continue daily routines and maintain social relationships as much as possible. Help them maintain a healthy lifestyle through exercise, proper nutrition, and fluid intake. Special diets and supplements are generally unnecessary.
If you are caring for someone with dementia, the following may be helpful:
Caring for someone with dementia can be difficult. It requires understanding, patience, and compassion. Joining an Alzheimer’s disease caregiver’s support group in your community may be helpful.
Be prepared for the eventuality that your loved one’s condition will deteriorate over time and additional full-time personal care may be needed. In some situations, placement in a nursing home is in the best interests of the individual and their family.
All material copyright MediResource Inc. 1996 – 2026. Terms and conditions of use. The contents herein are for informational purposes only. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Source: www.medbroadcast.com/condition/getcondition/Dementia
Pharmasave uses cookies to provide a personalized experience, analyze traffic, improve site performance, and provide social media features. By using our site, you agree to our privacy policy.