Alzheimer Disease [Disease/Finding] Dementia, Senile C0002395 Alzheimer Type Senile Dementia M0000842 1022264 N0000000363 Dementia, Alzheimer Type A degenerative disease of the BRAIN characterized by the insidious onset of DEMENTIA. Impairment of MEMORY, judgment, attention span, and problem solving skills are followed by severe APRAXIAS and a global loss of cognitive abilities. The condition primarily occurs after age 60, and is marked pathologically by severe cortical atrophy and the triad of SENILE PLAQUES; NEUROFIBRILLARY TANGLES; and NEUROPIL THREADS. (From Adams et al., Principles of Neurology, 6th ed, pp1049-57) C904 26929004 Senile Dementia, Alzheimer Type Alzheimer's Disease Alzheimer Disease D000544 Alzheimer Disease Primary Senile Degenerative Dementia Dementia, Primary Senile Degenerative Dementia [Disease/Finding] Tauopathies [Disease/Finding]