Unexplained weight loss in an 80-year-old woman.

An 80-year-old woman presented with long-standing history of weight loss and malnutrition, which had caused her to become reliant on the use of a wheelchair. Her symptoms were initially attributed to her medical comorbidities, however, during admission it became apparent that she had been suffering from depression and had gone on to develop an eating disorder. Eating disorders are most common in young adults but can affect all age groups, including the elderly population. The diagnosis is rarely considered in such patients and easily overlooked, especially when in the presence of chronic conditions and cognitive decline. A pre-existing psychiatric issue, most often depression, may also be present in this age group. There are no current treatment methods targeting patients in this population, who may not respond as effectively to the available strategies directed at young adults. It is important to always consider an eating disorder as a contributor or direct cause of unexplained weight loss in elderly patients.