Key features of this 23rd Edition

• The opening section describes the fundamentals of genetics, immunology, infectious diseases and population health, and discusses the core principles of clinical decision-making and good prescribing

• A new second section on emergency and critical care medicine encompasses poisoning, envenomation and environmental medicine, and introduces a new chapter on acute medicine and critical illness.

• The third section covers the major medical specialties, each thoroughly revised and brought fully up to date. Two new chapters on maternal and adolescent/ transition medicine complement the one on ageing and disease, addressing problems encountered at key stages of patients' lives. A new chapter on medical ophthalmology has been included as a direct response to readers' requests.

• Clinical Examination overviews summarise the main elements for each system and now feature in the biochemistry, nutrition and dermatology chapters.

• Presenting Problems sections provide a clear pathway for the assessment of the most common complaints in each specialty.