Patients with behavioral variant of frontotemporal disorder (bvFTD) according to Rascovsky criteria (2011) or patients with phénocopy frontotemporal dementia (phFTD) who fulfill criteria for possible bvFTD and have no imaging abnormalities or patients with frontal variant of Alzheimer disease according to Ossenkopele criteria (2022), or patient with bipolar disorder according to CIM 10 criteria
Score for Mini-mental state examination ≥ 18
Patient with caregiver who has who has known him/her in the 10 years preceding the disease onset.
