This chapter covers old age psychiatry, including both psychiatric illnesses in older people and specific aspects of illness with regard to the elderly, from neuroses and psychoses to mood disorders. New disorders owing to specific old age-related issues, such as bereavement, isolation, and the changing physiology of the brain, are covered, as well as pre-existing illnesses in the ageing patient. The increasing recognition of elder abuse is defined, and responses outlined. End of life considerations, such as power of attorney and advanced directives, are included.