Published online by Cambridge University Press: 07 January 2005
Patients with dementia may be treated with several drugs because of comorbid conditions or symptoms related to the dementia itself. Such drug treatment can complicate patient management because many drugs may cause side effects, such as depression and Parkinsonism, that also are considered behavioral disturbances of dementia. Distinguishing between drug side effects and behavioral problems is difficult but necessary for several reasons. Attributing the behavioral disturbance to an incorrect cause can affect the type of treatment selected and the patient's response to it. It also can increase the overall cost of care and adversely affect the patient's quality of life. Making this distinction has theoretical importance as well, including the development of new drugs that have fewer behavioral side effects.