Dementia is described as ‘young onset’ when symptoms develop before the age of 65, usually between 30 to 65 years of age.
Keep in mind…Dementia is caused by a wide range of different diseases…..
In case of early dementia The important causes are……
Family history of disease
Risk factors for young-onset Alzheimer’s disease include a family history of the condition.
Having a parent or grandparent with young-onset Alzheimer’s increases the risk of developing the disease.
Genes that cause young-onset Alzheimer’s
Three different genes may have a mutation that causes young-onset Alzheimer’s disease. ……..These genes are APP, PSEN1 or PSEN2.
So A person who inherits at least one copy of a mutated gene will likely develop Alzheimer’s disease before age 65.
Additionally …
When compared to older people, younger people affected by dementia are more likely to:
have a rarer form of dementia affecting behaviour and social functioning
report significantly higher psychological and physical distress
experience employment issues
have a younger and more dependent family
have additional caring responsibility for parents