Schizoaffective illness defies the dichotomy...and keeps DSM-III pondering

Models proposed to account for patients eventually labeled "schizoaffective" are traced historically. It is demonstrated that these patients represent a distinct clinical entity, and diagnostic criteria are then applied to reevaluate the position of schizoaffective disorder in our current and future nosology. Schizoaffective illness is held to be the example, par excellence, that defies the validity of Kraepelin's original dichotomy.