Dementia is not one single disease. It is a generic term for a range of symptoms that may be due to various diseases and types of damage. We have chosen to concentrate on the five most common forms of dementia, though we will also briefly describe some of the other forms.
Alzheimer’s disease - The disease makes it increasingly difficult to communicate. Early diagnosis is important.
Vascular dementia - Vascular dementia usually progresses in bigger or smaller steps following a major or minor strokes.
Frontotemporal dementia - Frontotemporal dementia is one of the primary degenerative dementia diseases.
Huntington’s disease - Huntington’s disease is very uncommon: 5 out of every 100,000 people are estimated to have the disease.
Lewy body dementia - Lewy Body dementia is estimated to account for 2–20 percent of all cases of dementia.
Mixed dementia - Mixed dementia is present when symptoms account for more than one type of dementia simultaneously.
Secondary dementia diseases - Secondary dementia diseases cover around eighty diseases and injuries, such as brain tumors, alcohol abuse and various deficiencies.
Parkinson’s disease - Parkinson’s disease is caused by a deficiency of the neurotransmitter called dopamine and accounts for 1.2–3 percent of all cases of dementia.