Dr. Aloysius "Alois" Alzheimer (German:[ˈaːloˌis ˈalts.haɪmɐ]; 14 June 1864 – 19 December 1915) was a Bavarian-born 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.