Liaison psychiatry, the recognition and management of psychiatric problems in the general medical setting, is an essential component of many doctors' work. Depression, anxiety and somatization disorders occur in about 50% of cases presented to primary care physicians. The Handbook of Liaison Psychiatry was first published in 2007 and is a comprehensive reference book for this fast-growing subspecialty. A team of experts in the field cover the full range of issues, from establishing a service and outlining the commonest problems encountered in general hospitals and primary care, to assessment and treatment guidelines, working with specific units within the hospital setting, disaster planning and legal-ethical considerations. It will be essential reading for doctors and other professionals concerned with the psychological health of patients in acute general hospitals and in primary care.