Trichotillomania is a chronic psychiatric disorder that repetitive hair pulling which leads to marked hair loss, negative effects on all areas of the person's functioning. Although trichotillomania has been known for many years, it has attracted less attention than other psychiatric disorders. Therefore, the information about its epidemiology, etiology, clinical feature and therapeutic approaches are limited. Trichotillomania usually begins in early childhood or adolescence. It is more common in women than men. Cases are frequently referred to the first dermatology outpatient clinics due to marked hair loss. Trichotillomania is one of the common issues of psychiatry and dermatology. In patients with trichotillomania, comorbid psychiatric disorders often accompany the clinical picture. The most common psychiatric comorbidities are mood disorders and anxiety disorders. In this study, we report a male patient who was treated with a diagnosis of very late onset trichotillomania with comorbid depression. The fact that trichotillomania started at an advanced age is a feature that makes our case interesting.