The Management of Persistent Pain in Older Persons

Pain is an unpleasant sensory and emotional experience. 1 Pain is a complex phenomenon derived from sensory stimuli or neurologic injury and modified by individual memory, expectations, and emotions. 2 Pain is usually associated with injury or a pathophysiologic process that causes an uncomfortable experience and is usually described in such terms. Although there are no objective biologic markers of pain, an individual’s description and selfreport usually provides accurate, reliable, and sufficient evidence for the presence and intensity of pain. 3 Persistent pain can be defined as a painful experience that continues for a prolonged period of time that may or may not be associated with a recognizable disease process. The terms persistent and chronic are often used interchangeably in the medical literature. Unfortunately for many elderly persons, chronic pain has become a label associated with negative images and stereotypes often associated with longstanding psychiatric problems, futility in treatment, malingering, or drug-seeking behavior. The term persistent pain may foster a more positive attitude by patients and professionals for the many effective treatments that are available to help alleviate suffering. 4 The clinical manifestations of persistent pain are commonly multifactorial. Because of the complex interplay among these factors across several domains (physiologic, psychologic, and social), discriminating which factors are most important for the purpose of treatment can be very challenging. Further complicating this task is the fact that pain expression and hence the importance of specific factors commonly vary, not only across individuals but also over time in one individual. Elderly persons have been defined by demographers, insurers, and employers as those aged 65 years and over. In healthcare discussions, the elderly persons often described are those who are most frail, with health and disability problems typically encountered in the older population. By age 75 many persons exhibit some frailty and chronic illness. In the population above age 75, morbidity, mortality, and social problems rise rapidly, resulting in substantial strains on the healthcare system and societal safety nets. This group represents the fastest growing segment of the total population. 5 The greatest challenges in geriatric medicine are represented by the oldest, sickest, and most frail patients with multiple medical problems and few social supports. The guideline panel focused its attention on this group as it prepared this update. Persistent pain is common in older people. 6 A Louis Harris telephone survey found that one in five older Americans (18%) are taking analgesic medications regularly (several times a week or more), and 63% of those had taken prescription pain medications for more than 6 months. 7 Older people are more likely to suffer from arthritis, bone and joint disorders, back problems, and other chronic conditions. This survey also found that 45% of patients who take pain medications regularly had seen three or more doctors for pain in the past 5 years, 79% of whom were primary care physicians. Previous studies have suggested that 25% to 50% of community-dwelling older people suffer important pain problems. 6,8,9 Pain is also common among nursing home residents. 10,11 It has been estimated that 45% to 80% of them have substantial pain that is undertreated. Studies of both the community-dwelling and nursing home populations have found that older people commonly have several sources of pain, which is not surprising, as older patients commonly have multiple medical problems. A high prevalence of dementia, sensory impairments, and disability in this population make assessment and management more difficult. The consequences of persistent pain among older people are numerous. Depression, anxiety, decreased socialization, sleep disturbance, impaired ambulation, and increased healthcare utilization and costs have all been found to be associated with the presence of pain in older people. Although less thoroughly described, many other conditions are known to be worsened potentially by the presence of pain, including gait disturbances, slow rehabilitation, and adverse effects from multiple drug prescriptions. 12 Psychosocial factors affect and are affected by pain in older patients. It has been shown that older adults with good coping strategies have significantly lower pain and This guideline was developed and written under the auspices of the American Geriatrics Society (AGS) Panel on Persistent Pain in Older Persons and approved by the AGS Board of Directors on April 8, 2002.