Parkinson's disease is caused by decreased dopaminergic neurons of the substantia nigra. Psychosis occurs between 20 and 40% of patients with Parkinson's disease. Dopaminergic drugs act as aggravating or precipitating factor. Before the introduction of levodopa patients had described visual hallucinations but the frequency was below 5%.

Illustrated importance of treatment, reassessment after its introduction and refractoriness to answer; as well as the importance of a differential diagnosis at the onset of psychotic symptoms later in life.

Clinical case: female patient 75 years tracking Neurology by parkinsonism in relation to possible early Parkinson disease. She was prescribed rasagiline treatment. Begins to present visual and auditory hallucinations, delusional self-referential and injury. She had no previous psychiatric history. She went on several occasions to the emergency room, where the anti-Parkinson treatment is decreased to the withdrawal point and scheduled antipsychotics did not answer. Doses of antipsychotics are increased despite which symptoms persist and even increase psychotic symptoms. In this situation it is agreed to extend the study. Subsequently an NMR of the skull where the image is suggestive of a right occipital meningioma appears.

With the emergence of psychotic symptoms later in life it will be important to ask a broad differential diagnosis, since in a large number of cases will be secondary to somatic or to drug therapies.

Parkinsonism can be a symptom of occipital meningioma, presenting in the psychotic clinic. Refractoriness, on one hand to the suspension of treatment for Parkinson's disease, such as poor response to antipsychotics, did extend the study, which ultimately gave us the diagnosis.

The authors have not supplied their declaration of competing interest.