Abstract
Gilles de la Tourette (or briefly Tourette) syndrome (TS) is a neurobehavioral disorder that often
begins in childhood and is characterized by motor and vocal tics. Many psychiatric disorders may
accompany TS, attention‑deficit hyperactivity disorder, and obsessive–compulsive disorder being
the most frequent. However, literature regarding the association between TS and psychosis is
controversial. We present a patient who has comorbid TS and psychosis and is treated successfully
with quetiapine.