Symptoms of frontotemporal dementia include dramatic behavioral changes such as increasingly inappropriate actions, loss of empathy, repetitive compulsive behavior, lack of inhibition and a decline in personal hygiene, according to Mayo Clinic. Impairment or loss of speech can occur in some subtypes of frontotemporal dementia.
Those with rare subtypes of frontotemporal dementia exhibit movement disorders that can include tremors, rigidity, decreasing coordination, muscle spasms and muscle weakness, states Mayo Clinic. The cause of frontotemporal dementia is a shrinking and subsequent degeneration of the frontal and temporal lobes. More than half of patients who develop frontotemporal dementia have no family history of the disease. Gene mutation has been linked to frontotemporal dementia.