Patients with schizophrenia commonly encounter a variety of sleep disorders. Disturbed sleep can be found in 30-80% of patients, depending on the degree of psychotic symptomatology. Difficulty falling asleep, maintaining, or achieving restful sleep is associated with symptom severity and has been reported as a prodromal symptom of psychotic relapse. Although some sleep disorders improve with antipsychotic treatment, in many cases, even during disease remission, sleep continues to be fragmented, or even different pathophysiological mechanism is causing sleep disruption. Moreover, it may be complicated if the patient needs specific treatment, such as positive airway pressure (PAP) therapy, due to sleep-disordered breathing. The article presents case reports of patients with schizophrenia with sleep disturbances. As presented in our case reports, cognitive behavioral therapy seems effective in treating comorbid insomnia, even in patients with schizophrenia. The second and third case reports emphasise the need for broader clinical considerations, a cross-diagnostic approach, and cooperation in care for patients with severe mental disorders.

Department of Psychiatry University Hospital Olomouc Faculty of Medicine Palacky University in Olomouc Olomouc The Czech Republic

Department of Psychological Sciences Faculty of Social Science and Health Care Constantine the Philosopher University in Nitra Nitra The Slovak Republic

Department of Psychotherapy Institute for Postgraduate Training in Health Care Prague The Czech Republic

Department of Respiratory Medicine Faculty of Medicine and Dentistry Palacky University Olomouc and University Hospital Olomouc Olomouc The Czech Republic

Rehabilitation Hospital Beroun Jessenia Inc Akeso Holding Závodí The Czech Republic

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