The signs and symptoms linked to dementia can be understood in three stages. Early stage:the early stage of dementia is often overlooke because the onset is gradual. Common symptoms include: 1. Middle stage:as dementia progresses to the middle stage, the signs and symptoms become clearer and more restricting. Late stage:the late stage of dementia is one of near total dependence and inactivity.
Memory disturbances are serious and the physical signs and symptoms become more obvious. See full list on who. There are many different forms of dementia.
Alzheimer disease is the most common form and may contribute to 60– of cases. Other major forms include vascular dementia, dementia with Lewy bodies (abnormal aggregates of protein that develop inside nerve cells), and a group of diseases that contribute to frontotemporal dementia (degeneration of the frontal lobe of the brain). The boundaries between different forms of dementia are indistinct and mixed forms often co-exist. Worldwide, around million people have dementia , with nearly living in low- and middle-income countries.
Every year, there are nearly million new cases. The estimated proportion of the general population aged and over with dementia at a given time is between 5-. Much of this increase is attributable to the rising numbers of people with dementia living in low- and middle-income countries.