For the patient:

• Patient with a diagnosis of idiopathic Parkinson's disease
• Patient over 18 years ;
• Patient with a Hoehn and Yahr Stage greater than or equal to 3;
• Patient without major cognitive impairment defined by a MOCA score ≥21
• Patient living at home ;
• Patient with an identified non-professional primary caregiver;
• Person affiliated with or benefiting from a social security plan;
• Free, informed and and express consent (confirmed in writing) (no later than the day of inclusion and before any examination required by the research).

For the caregiver:

• Male or female over 18 years
• Able to respond to research interviews/questionnaires
• Free, informed and express consent (confirmed in writing) (no later than the day of inclusion and before any examination required by the research).

For the patient:

• Patient with medically indicated dementia impairing comprehension and adherence, and/or with severe confusion or psycho-hallucinatory state;
• Institutionalized or foster care patients;
• Patients with a known severe and unstable general pathology that does not allow for patient follow-up;
• Patients already included in another non-drug management trial;
• Patients whose institutionalization is envisaged in the short term (within 6 months) or for whom a change of residence is envisaged in the short term and would not allow for follow-up assessments;
• Patients under guardianship or unable to express consent
• Primary caregiver not wishing to participate in the study or unable to be available for the planned study follow-up;
• Presence of a primary caregiver with a known severe and unstable disease that does not allow for the conduct of the study;
• Presence of a primary caregiver with a known cognitive or psychiatric disorder (chronic progressive psychosis) that does not allow for the proper conduct of the study.
• Pregnant or breastfeeding woman.

For the caregiver:

• Unable to follow the research interviews or questionnaires.
• Primary caregiver not wishing to participate in the study or unable to be available for the planned study follow-up;
• Primary caregiver with a known severe and unstable illness that does not allow for the proper conduct of the study;
• Primary caregiver with known cognitive or psychiatric disorders (chronic progressive psychosis) that do not allow the study to be conducted properly.