Lishman defined dementia as “an acquired global impairment of intellect, memory and personality but without impairment of consciousness”.

Early onset dementias present before the age of 65 years. They are much rarer than dementia in later life and there is a wider differential diagnosis.

Accurate diagnosis requires a comprehensive assessment and investigations. It is important to identify any treatable causes of dementia, as well as genetic conditions which may impact on the family of the patient. Longer-term support is also vital to help manage the cognitive, neuropsychiatric and behavioural symptoms that often accompany these disorders.

This module looks at different types of assessment for early onset dementia as well as the various possible causes. Recommendations are also made for treatment and overall management.

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