Friday, August 9, 2013

Depression without Sadness


Depression is a seriously debilitating disease that increases your chances of early death. In a report that looked at twenty five separate research studies the conclusion was that depressed people are nearly twice as likely to die early when compared to non-depressed people.

Depression affects about fifteen in every hundred older adults. There seems to be less of a difference between gender than at younger ages and affects different ethnicities equally. Although these studies find that depression is less common in older age, it might be argued that we are not measuring depression correctly among older adults.

An emerging argument is that depression in older adults is more subtle and remains undetected. While on the other hand depressive symptom checklists are inflated as they include symptoms that are directly linked to a physical illness or bereavement, both of which increase in frequency with age. How good are we at identifying depression among older adults?

Although we normally associate depression with sadness, studies are now showing that older adults are generally less likely than young adults to report sadness--dysphoria--when they are depressed. Joseph Gallo from John Hopkins University and colleagues reported that in a number of different studies older adults were less likely to report being sad than younger persons.  And this seems to be an aging effect rather than to a particular generation. People who might have expressed sadness with depression when they were young, as they get older they are less likely to express sadness with their depression. Depression among older adults is related more to listlessness and lack of interest in life rather than sadness.

It could be that older adults are better at separating sadness from depression. However studies show that older adults are not very good at identifying facial expressions showing anger, fear, happiness, and sadness. And it is the more subtle expressions of emotions that older adults have trouble with.  Andrew Mienaltowski and his colleagues in Bowling Green, Kentucky show that in general, older adults have more difficulty discriminating between low intensity expressions of negative emotions than did younger adults.

The issue is that older adults not only do not express sadness with their depression but that they are less likely to see sadness in others. With health care professionals getting older, it is not just depressed older adults that we need to be concerned about but also their physicians. If older physicians are less likely to see sadness then they are less likely to notice depression. Depression without sadness is not only difficult to detect by physicians it is also a silent killer. In a 13-year follow-up, older adults who reported  depressive symptoms without dysphoria--nondysphoric depression--were at increased risk for death, functional limitation, cognitive impairment and psychological distress. Among suicide victims 55 and older, 58 percent visited a general physician in the month before the suicide. In fact, 20 percent see a general physician on the same day and 40 percent within one week of the suicide.

Depression among older adults is a serious issue and it is not part of the aging process. The lack of expression of sadness and the diminished ability by others of perceiving sadness further hides this silent early killer.

No comments:

Post a Comment