Eligibility Criteria:
Inclusion Criteria:
* Adults aged ≤ 65 years,
* Idiopathic PD (According to British Brain Bank Criteria) without any other known or suspected cause of Parkinsonism,
* Hoehn and Yahr stage ≤ 2.5 in the best ON,
* Disease duration ≥ 4 years,
* Presence of fluctuations and/or dyskinesias for no more than 3 years,
* One of the two following forms of impairment :
* Impairment in activities of daily living (MDS-UPDRS II\>6) due to PD-symptoms despite medical treatment in the worst condition or,
* Impairment of social and occupational functioning (measured with SOFAS) due to PD-symptoms despite medical treatment (51-80%),
* PDQ39 completed,
* Able to understand and remember the component of the study,
* Written informed consent,
* Patients covered with social insurance.
Exclusion Criteria:
* Dementia (MoCA \< 22),
* Major uncontrolled depression at the time of assessment (BDI \> 25) or Bipolar disease,
* Active hallucinations or history of hallucinations in the past year,
* Need for nursing care,
* Previous use of apomorphine pump treatment,
* History of respiratory depression,
* History of deep brain stimulation or lesional surgery for PD or intrajejunal L-Dopa,
* Presence of severe freezing or clinically relevant postural instability leading to falls during the ON state,
* Symptomatic clinically relevant and medically uncontrolled orthostatic hypotension,
* Clinically relevant hepatic dysfunction (total bilirubin \>2.0 mg/dL, Alanine Amino Transferase (ALT) and Aspartate Amino Transferase (AST) \>2 times the upper limit of normal),
* Clinically relevant renal dysfunction (serum creatinine \>2.0 mg/dL),
* Pregnant and breastfeeding women,
* Hypersensitivity to apomorphine or any excipients of the medicinal product,
* Concomitant therapy or within 28 days prior to baseline with : alpha-methyl dopa, metoclopramide, reserpine, neuroleptics (except Clozapine), methylphenidate, or amphetamine, intrajejunal Ldopa,
* History or current drug or alcohol abuse or dependencies,
* Patients with a borderline QT interval corrected for heart rate according to Bazett's formula (QTc) of \>470 ms for male and \>480 ms for female at screening or history of long QT syndrome;
* Adults legally protected (under judicial protection, guardianship or supervision), persons deprived of their liberty.