In the present study, BD patients had higher levels of psychopathology than did psoriasis patients in terms of psychologic test scores. The duration of illness affected the severity of the psychiatric symptoms in the BD group, but not in the psoriasis group. The duration of illness was a major risk factor for the development of depression in BD. These findings indicate the need for early recognition of psychiatric symptoms in patients with BD.

Patients with ASP are more sensitive to toxic effects of alcohol. Alternatively chronic alcoholism leads to frontal lobe dysfunction recognised as ASP in the clinical setting.

Suicide is one of the major problems among Turkish psychiatric patients, although the Islamic religion strongly disapproves of it.

Tobacco, alcohol, substance use and drug misuse are significant health concerns in Turkey. Socio-demographic status is an important determinant of several aspects of tobacco, alcohol, substance use and drug misuse and should therefore be evaluated carefully to develop effective protective and preventive strategies.