
In 1907, Aloysius "Alois" Alzheimer presented a rare case of dementia in a 51-year-old woman. This "presenile dementia" (younger than 60) was thought distinct enough from "senile dementia" (older than 65) to warrant a new name, thus it became known as, "Alzheimer's disease" (AD).
In the 1970s, however, some researchers argued that because of their similar symptoms and diagnostic hallmarks, "Alzheimer disease and senile dementia should be considered a single disease."
References
1. R. Katzman, "The prevalence and malignancy of Alzheimer's disease: a major killer," Arch Neurol, 33:217-8, 1976. 2. M. Chen, H.L. Fernandez, "Alzheimer's disease revisited 25 years later: Is it a "disease" or senile condition?" Front Biosci, 6:e30-40 2001. 3. P.J. Fox et al., "Defining dementia: social and historical background of Alzheimer disease," Genet Test, 3:13-9 1999. 4. D.A. Drachman, "Aging of the brain, entropy, and Alzheimer disease," Neurology, 67:1340-52, 2006. 5. R.H. Swerdlow, "Is aging part of Alzheimer's disease, or is Alzheimer's disease part of aging?" Neurobiol Aging, (Epub ahead of print) July 28, 2006 doi:10.1016/j.neurobiolaging.2006.06.021Interested in reading more?
