Insomnia is common in patients with cancer, with a higher prevalence than observed in the general population.
Insomnia is often under-recognised and inadequately treated in patients with cancer.
Brief validated screening tools are available for the evaluation of insomnia in clinical practice.
First-line therapy should be based on international guidelines recommending cognitive behavioural therapy for insomnia.
Keywords: cancer; insomnia; oncology; psychiatry; psycho-oncology.