I found this on the website of a firm of attorneys who has filed lawsuits on behalf of clients who allegedly developed a compulsive gambling disorder while on Mirapex:

According to a study by Mayo Clinic doctors released in July 2005, the drug Mirapex may cause compulsive gambling addictions. The Mayo study builds upon earlier research which suggested a link between dopamine agonist drugs, like Mirapex, and compulsive gambling. For example, a study published in 2003 by researchers at the Muhammad Ali Parkinson Research Center at the Barrow Neurological Institute in Arizona found increased pathological gambling in those being treated with high-dose dopamine agonist therapy, and in particular with Mirapex.

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