Frontotemporal lobar degeneration, also known as frontotemporal disorder, frontotemporal dementia, or frontotemporal degeneration, is a rare progressive neurocognitive disorder caused by damage to neurons in the brain’s frontal and temporal lobes and leading to a range of symptoms including behavioral changes, apathy, loss of empathy, compulsive behavior, dietary changes, language impairment, and motor-skills impairment. The onset can occur as early as one’s 20s or 30s; it is a common cause of NCDs in people younger than 65. The prognosis for frontotemporal degeneration patients is grimmer than for those with many other NCDs; the median survival rate, according to the DSM-5, is 6-11 years from the onset of symptoms, or 3-4 years after diagnosis.