Nurses in the field of case management are responsible for providing care to patients who receive long-term treatment. Case management nurses also usually specialize in one area, such as pediatrics, geriatrics, or HIV/AIDS; and they work closely with patients, doctors, and other caregivers to coordinate care and manage costs. In many cases, the patients cared for by case management nurses have complex needs. They might see a variety of specialists or need frequent treatments or procedures. Case management nursing is a complex and multi-faceted field in which nurses are likely to have a long-term working relationship with patients or clients.