Alois Alzheimer
Alois Alzheimer ( AHLTS-hy-mər, German: [ˈaːlɔɪs ˈʔaltshaɪmɐ]; 14 June 1864 – 19 December 1915) was a German psychiatrist, neuropathologist and colleague of Emil Kraepelin. He is credited with identifying the first published case of "presenile dementia", which Kraepelin later identified as Alzheimer's disease.