Alzheimer's disease
WordNet
noun
(1) A progressive form of presenile dementia that is similar to senile dementia except that it usually starts in the 40s or 50s; first symptoms are impaired memory which is followed by impaired thought and speech and finally complete helplessness
WiktionaryText
Etymology
Named after Alois Alzheimer (June 14, 1864 - December 19, 1915), a German neurologist who described the disease in 1906.
Noun
- A disorder involving loss of mental functions resulting from brain tissue changes; senile dementia of Alzheimer's type.