The purpose is to explore the frequency of impulse control disorders in Parkinson's patients treated with different Parkinson's medications.

Inclusion Criteria:

Observation Criteria:

Male or female outpatients, aged 30 to 75 years of age, with idiopathic PD. Patients must be selected on the basis of a prospective recruitment plan documented at the site, with the objective of obtaining an unbiased representative sample.

Patients must have been treated with anti-parkinson medication for a period of one year or greater and demonstrated a treatment response, in the opinion of the Investigator.

Patients must be willing and able to comply with study procedures. Patients must be willing and able to give meaningful, written informed consent. This must be completed prior to beginning any study procedures, in accordance with GCP and local legislation.

Exclusion Criteria:

Parkinson's patients treated with various medications