Alzheimer's disease (AD) poses a major clinical challenge because of i
ts high prevalence in the aging population, its prolonged course, and
the absence of curative treatment. Important advances have recently be
en made, however, in the diagnosis of the disease and the elucidation
of its neuroscientific basis. Genetic research has identified an allel
e of apolipoprotein E that may confer a higher risk of developing AD.
In addition, new, possibilities for treatment are being investigated.
One drug therapy-tacrine-has been approved, although uncertainty linge
rs about its efficacy and safety. In the absence of effective medical
treatment, AD is a difficult problem for patients and their families.
However, the physician cart help by providing emotional support, sympt
om management, and informed counseling.