A study published in Lancet Psychiatry finds CBT reduced insomnia among individuals with persistent delusions or hallucinations associated with insomnia and a schizophrenia spectrum diagnosis, reports Healio.

“Sleep problems are pervasive in people with schizophrenia. In a study of patients with persecutory delusions, 54% had clinical insomnia, 30% had subthreshold insomnia, and only 16% were sleeping well. In outpatients with clinically stable schizophrenia, poor sleep is common and associated with an increased severity of positive symptoms,” Daniel Freeman, PhD, of Warneford Hospital in Oxford, United Kingdom, and colleagues wrote.