Commentary

A disease that strikes close to home

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Dementia is a condition that strikes close to home for all of us.

Besides caring for these patients, many of us also have a parent, spouse, or a close relative with dementia. My 90-year-old mother has multi-infarct dementia from her diabetes and vascular disease, but is still able to live in an apartment with my 91-year-old father, with assistance from wonderful home aides. Despite her profound dementia, she can still play the piano and read music.

Menchola and Weiss are to be congratulated for their excellent, evidence-based review of the diagnosis, treatment, and prevention of Alzheimer’s disease (AD). (See "Addressing Alzheimer’s: A pragmatic approach.") They do not get caught up in unjustified enthusiasm for screening and drug treatment. Some of their important recommendations bear repeating here:

A look at the evidence on Alzheimer's disease should prompt us to use drugs sparingly and avoid treatments that do more harm than good. Do not routinely screen for AD. This may seem like heresy in these days of early detection and prevention. But for screening to be useful, there must be effective early interventions, and so far, early treatments for AD have been disappointing. Cholinesterase inhibitors and N-methyl-D-aspartate glutamate receptor blockers provide very small improvements in cognitive function and have significant adverse effects. Some behavioral interventions to delay onset of cognitive decline show promise—but are unproven.

Although routine screening is not recommended, “case finding” remains important. We need to be alert to signs and symptoms that suggest early dementia in our patients, and we need to evaluate these patients carefully or refer them for neurologic testing if the diagnosis is in doubt.

Use drugs sparingly, especially when treating behavioral problems. They have serious adverse effects, and behavioral interventions should always be used first. Encourage caregivers to seek out social support. My father attends an Alzheimer’s support group each month, and this has lifted some of the burden.

Address prognosis and end-of-life care, and avoid unnecessary and aggressive treatments that are likely to cause more harm than benefit. Hospice care is suitable and beneficial for those with late-stage Alzheimer’s, but feeding tubes are not.

With many new advances in research techniques, it is likely that investigators will develop better methods of diagnosis and treatment of AD. In the meantime, there is already much we can do to alleviate the suffering of these patients and support their caregivers. This knowledge will likely serve us at home, as well.

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