Alzheimer's disease is a progressive condition characterized by a loss of cognition, altered behavior, and a loss of functional ability, such as bathing, dressing, toileting, and organizing finances. Family and friends provide nearly three quarters of all care for patients with Alzheimer's disease. This informal care results in significant burden to caregivers. Caregiver burden is the set of physical, psychological or emotional, social, and financial problems that family members may experience when caring for impaired older adults.