recruitment difficulties

This study aims to describe hallucinations prevalence in a sample of patients affected by Parkinson's disease and consulting in an outpatient facility.

An unique one hour interview will be offered to volunteers patients. Patients participating to the study will be asked to answer a semi-structured questionnaire searching for hallucinations of all modalities, minor psychotic symptoms and delusions. Psychometric scales will be assessed to search for depressive symptoms, cognitive impairment and specific personality characteristics.

The study hypothesis is that hallucinations prevalence in Parkinson's disease is underestimated and is higher than usually described in the scientific literature when all hallucinations modalities and minor hallucinatory phenomenons are searched for.

Inclusion Criteria:

• Age ≥ 18 years-old
• Absence of opposition from the patient himself/herself or his/her legal representant for his/her participation to the study
• Patient without superior age limit with a diagnosis of Parkinson's disease made according to the UKPDSBB criteria (UK Parkinson's Disease Society Brain Bank clinical diagnostic criteria)
• Outpatient consulting in neurology at the Charpennes'hospital

Exclusion Criteria:

• Opposition to the study
• Deafness or blindness which could compromise the interview

Outpatients affected by Parkinson's Disease consulting in neurology can be included if volunteer