Parkinson’s disease is regularly associated with non-motor symptoms that are often not sufficiently diagnosed and treated. We describe development of an impulse control disorder in relation to the administration of dopamine agonist pramipexole to a 61 year-old male with Parkinson’s disease. Behavioral disturbances in the patient evolved gradually after the initiation of pramipexole therapy in a dose of 2.1 mg pro die and disappeared within several weeks after pramipexole daily dose reduction to 0.54 mg. The case demonstrates the necessity for careful monitoring of adverse effects of dopaminergic treatment in patients with Parkinson’s disease. Differential diagnosis of symptoms and treatment options are discussed.