Not all types of dementia cause memory loss: what happens when it strikes early

Frontotemporal dementia (FTD) is a group of disorders that primarily affect the frontal and temporal lobes of the brain, resulting in personality changes, loss of empathy, impulsive behavior, and language difficulties. Unlike Alzheimer's disease, which is often characterized by memory loss, FTD presents with early behavioural issues that may seem like stress, depression, or a midlife crisis. These changes can be so subtle that they are initially mistaken for psychiatric problems rather than a neurological disorder.

In FTD, the frontal and temporal lobes, which are crucial for personality, language, decision-making, and social conduct, are predominantly affected. This can lead to a variety of symptoms such as unexplained changes in behavior, indifference to others' feelings, excessive spending, and altered eating habits. Language problems may also emerge, making it difficult for the person to find words or understand what others are saying.

Diagnosing FTD involves a careful evaluation of the pattern of symptoms, a detailed medical history, neurological examination, cognitive and neuropsychological assessments, and brain imaging. A crucial aspect of the diagnosis is the information provided by family members, as people with FTD may not recognize their own changes in behavior. In some cases, a single test is not sufficient to diagnose FTD, as memory-based screening can sometimes appear normal even when other cognitive functions are impaired.

Imaging tests, such as MRI, can reveal shrinkage or atrophy in the frontal and temporal regions of the brain, which is characteristic of FTD. However, these scans can sometimes be normal at an early stage. In such cases, functional imaging like an FDG-PET scan may be necessary to provide additional information. Genetic testing may also be considered in certain situations, particularly when there is a strong family history or unusually early onset of the disease.

Unfortunately, there is currently no treatment that can reverse FTD or halt its progression. Management focuses on controlling symptoms, maintaining the person's independence, and supporting caregivers. Medications may be prescribed to address symptoms like irritability, aggression, psychosis, or compulsive behavior. However, these medications primarily treat symptoms rather than the underlying disease.

Supportive care, behavioral and environmental strategies, and caregiver support are all essential components in managing FTD.