Frontotemporal disorders Understanding Different Types of Dementia Learn more about four different types of dementia, what's happening in the brain, and more. Read and share this NIA infographic. Providing Care for a Person With a Frontotemporal Disorder Get advice on providing care for a person with frontotemporal dementia or similar disorder. Learn how to manage home, family, work, and long-term care issues. What Are Frontotemporal Disorders? Causes, Symptoms, and Treatment A type of dementia called FTD tends to strike before age 60 and stems from damage to the brain’s frontal lobe and temporal lobe. Learn more about FTD and brain changes from NIH.