This study is about understanding how people with rare brain diseases use healthcare services and how these services affect their daily lives. The diseases being looked at are called atypical Parkinsonian syndromes, which include progressive supranuclear palsy (PSP), multiple system atrophy (MSA), and corticobasal syndrome (CBS). They can make moving, seeing, thinking, and speaking difficult. The study will compare different healthcare services, like special clinics where a team of experts help, to see which ones help patients and their families the most.

The study has two parts: First, it will look at how different services in our clinic area affect patients. Then, it will compare our clinic's patients with those in other areas without special clinics. Patients will answer questions about their quality of life and health service use every 6 months.

• Participation is voluntary and requires consent.
• Some assessments will be done in-person, either at the clinic or at home.
• Only adults with certain brain diseases who can give consent can join.