Sonderbehandlung (abbr. S.B.) is a German noun meaning special treatment in English, also existing as a verb: sonderbehandeln (to treat specially). While it can refer to any sort of preferential treatment, it is known primarily as a euphemism used by Nazi functionaries and the SS for mass murder. It first came to prominence during Action T4, where SS doctors killed mentally ill and disabled patients between 1939 and 1941, and was one of a number of nonspecific words the Nazis used to document mass murder and genocide. Another notable example was Sonderbehandlung 14f13.

Sonderbehandlung (abbr. S.B.) is a German noun meaning special treatment in English, also existing as a verb: sonderbehandeln (to treat specially). While it can refer to any sort of preferential treatment, it is known primarily as a euphemism used by Nazi functionaries and the SS for mass murder. It first came to prominence during Action T4, where SS doctors killed mentally ill and disabled patients between 1939 and 1941, and was one of a number of nonspecific words the Nazis used to document mass murder and genocide. Another notable example was Sonderbehandlung 14f13.