SL-START - SubLingual Apomorphine Schemes of TitrAtion in Real-world Treatment

Inclusion Criteria: * The patient is ≥ 18 years of age. * The patient has a clinical diagnosis of idiopathic Parkinson's disease. * The patient will initiate SL-APO for the treatment of OFF episodes according to the SmPC. * The patient is not currently on titration or maintenance dose for SL-APO. * The patient has provided written informed consent to participate in this study. Exclusion Criteria: * The patient is participating in a clinical trial with an investigational drug. * The patient has presented with dementia or evidence of cognitive decline as determined by the investigator. * The patient has a history of psychotic disorder. * The patient presents any other contraindication according to the SL-APO SmPC.