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