Parkinson's disease (PD) ranks second among neurodegenerative diseases and is a major cause of neurological motor disability. The number of PD cases doubled between 1990 and 2016. The consequences of PD, including an increased risk of falls, loss of autonomy and reduced quality of life, contribute to increased morbidity and mortality. The costs associated with falls in the elderly (a fortiori those with PD) and their consequences represent between 0.85% and 1.5% of total healthcare expenditure.

There is currently no cure for PD. Treatment is symptomatic and depends on the degree of functional impairment and the age of onset. After a period of stabilization (state phase) of varying length, the clinical situation worsens because of treatment-related motor complications (motor fluctuations, on/off phenomena, dyskinesias, under/overdosing) and the appearance or worsening of disease-specific signs linked to the pathogenic process. Treatment of motor complications involves constantly adjusting doses and dosing schedules to suit each individual case, and to take account of variations in the patient's motor status over the months. These adjustments must also take into account the non-motor signs of the disease, notably thymic fluctuations, treatment-related behavioral disorders, fatigue, sensory and pain disorders. Regular follow-up of patients is therefore essential to assess the evolution of their symptoms, adjust treatment, adapt therapeutic interventions and improve their quality of life. However, most consultations with the neurologist are bi-annual, and because of the long time lapse between two consultations, the practitioner often has only incomplete information on the evolution of symptoms.

To help fill these gaps, advances in digital health technologies, with the development of telemonitoring solutions, enable patients to be monitored remotely and provide a potentially more robust amount of information relating to the severity of the disease and its evolution over time. In this sense, remote monitoring in PD would enable the neurologist to readjust treatment at the right time and in the most appropriate way. This will be done by means of a weekly questionnaire (adapted from the clinical examination via the MDS-UPDRS scale) completed by the patient via a mobile application.

Remote monitoring of patients should improve their symptom management and quality of life, hence the interest in an intervention offering a remote monitoring service: DIGIPARK MONITOR.

Inclusion Criteria:

• Age ≥ 18 years ;
• Parkinson's disease according to MDS diagnostic criteria ;
• Classified as stage 1.5 to 3 according to the Hoehn and Yahr stages ;
• Followed by a neurologist since at least one month;
• Equipped with a smartphone or a computer or tablet with internet/cellular data access via the latter (or with the caregiver) ;
• Resident on French territory affiliated to a social security scheme.

Exclusion Criteria:

• Person under guardianship, curatorship or safeguard of justice or any other administrative or judicial measure of deprivation of rights and freedom;
• Patient suffering from dementia, mental disorders, cognitive disorders, or psychiatric pathology that could compromise the patient's informed consent and/or compliance with the study protocol;
• Patient deemed non-autonomous by the investigator and without a caregiver;
• Patient already included in another interventional research study, with the exception of NS-PARK's "PRECISE-PD" cohort.