Nonaffective acute remitting psychosis: historical and nosological aspects

The present paper reviews the different approaches and evolution of the concept of nonaffective acute remitting psychoses (NARP) through a historical perspective. Although reports and clinical descriptions of nonaffective acute remitting psychoses were found as early as the middle of the 19th century there has been no consensus on their course and clinical characteristics, and this confusion and lack of clarity is expressed in the current major nosological systems. This selected review will focus on the main approaches to the definition of this group of psychoses and their expression in the current major nosologies.