Inclusion Criteria:  The patient has a diagnosis of probable Frontotemporal dementia behavioural variant (bv-FTD) based on the International consensus clinical diagnostic criteria described by Rascovsky et al., 2011. The patient is a man or a woman, aged from 40 to 80 years. The patient has a Clinical Dementia Rating-FTD (CDR-FTD) total score of ≤2 at Screening. The patient has not been treated with acetylcholinesterase inhibitor (AChEI), i.e., donepezil, galantamine, or rivastigmine, at the time of screening. The patient is able to comply with the study procedures in the view of the investigator. Evidence of frontotemporal hypometabolism at PET imaging. Evidence of amyloid markers excluding Alzheimer's disease (cerebrospinal fluid Abeta/Tau dosages or amyloid PET imaging). Signature and date of written ICF prior to entering in the study Female patient must be neither pregnant nor breastfeeding. Women of childbearing potential should be willing to use contraception while receiving Rotigotine and for six months after its last assumption  Exclusion Criteria:  Significant neurodegenerative disorder of the central nervous system other than FTD e.g., Alzheimer's disease, Lewy body dementia, Parkinson's disease, multiple sclerosis, progressive supranuclear palsy, normal pressure hydrocephalus, Huntington's disease, any condition directly or indirectly caused by Transmissible Spongiform Encephalopathy (TSE), Creutzfeldt-Jakob Disease (CJD), variant Creutzfeldt-Jakob Disease (vCJD), or new variant Creutzfeldt-Jakob Disease (nvCJD) Significant intracranial focal or vascular pathology seen on brain MRI scan within a maximum of 6 months before Baseline leading to a diagnosis other than probable FTD. The patients has history of seizure (with the exception of febrile seizures in childhood). Metal implants in the head (except dental), pacemaker, cochlear implants, or any other non-removable items that are contraindications to MR imaging. Treatment currently or within 3 months before Baseline with any of the following medications: Typical and Atypical antipsychotics (i.e., Clozapine, Olanzapine); Antiepileptics drugs (i.e., Carbamazepine, Primidone, Pregabalin, Gabapentin); Antidepressants (i.e., Citalopram, Duolxetine, Paroxetine).