The term 'fronto-temporal dementia' is used for a range of conditions, including Pick's disease, frontal lobe degeneration and the dementia associated with motor neurone disease. Damage occurs in the frontal or temporal lobe areas of the brain, or both. Younger people - those under the age of 65 - are more likely to be affected. Symptoms vary, but often include personality and behaviour changes, problems with judgement and planning, and loss of language skills.