Frontotemporal dementia (FTD) is caused by damage to the frontal and temporal lobes of the brain. These are the parts of the brain that control personality, emotions, behaviour, thinking and language.
The symptoms of FTD can vary depending on which parts of the frontal and temporal lobes are affected. Although FTD is rare compared with Alzheimer’s disease and vascular dementia, it is the second most common cause of early onset dementia, which is the name for dementia in people younger than 65 years old.
Symptoms may include: