Early treatment findings and the duration of untreated psychosis Clinical researchers have long noted that many patients with psychosis appear to experience a prodromal phase characterized by alterations in perception and changes in behavior.20-22 As early as 1927, Sullivan observed that ”The great number of our patients have shown for years before the break, clear signs of coming trouble…23 Similarly, Meares22 maintained, Inhibitors,research,lifescience,medical “What is needed

is not the early diagnosis of schizophrenia, but the diagnosis of prepsychotic schizophrenia.” Despite the widespread clinical recognition of the prodrome, little attention had been directed at this phase of illness until recently, most likely because prevention was not possible. Recent interest

has developed and increased with the availability of potential treatment tools: antipsychotic (AP) Inhibitors,research,lifescience,medical medication. The importance of early treatment was first suggested by Wyatt et al,24-26 who provided indirect evidence suggesting that the earlier medication was initiated after onset of schizophrenia, the better the outcome, thus suggesting that psychosis itself is toxic to the brain. The association of the duration of untreated psychosis (or DUP) with prognosis has since been supported by a substantial Inhibitors,research,lifescience,medical number of studies27,28 (although there are contradictory findings29-31) and has often been cited to suggest that treatment initiated before onset is likely to lead to the best outcome.32,33 The introduction of second-generation APs (SGAPs) Inhibitors,research,lifescience,medical with an apparently reduced side-effect profile contributed significantly to the feasibility and ethicality of such early treatment studies. As a result, though less than a decade old, early Inhibitors,research,lifescience,medical intervention and prevention

studies have now spread throughout the world.34,35 What should be treated? The issue of what should be treated is highly complex at this stage of research. Since the field is young and continues to evolve, the natural course of the selleck screening library prodrome is not well established and the population continues to be “at risk” rather than to consist of affected patients with a definite syndrome.6,35 As a result, there is some disagreement throughout the field as to what Adenylyl cyclase symptoms to treat, and what the short- and long-term treatment goals should be. Rates of conversion to psychosis among prodromal individuals range from 20% to 45%, depending on how the prodrome is defined and measured.36-38 This complicates interpretation of treatment findings and raises the question as to whether emphasis should be directed to prevention (ie, lowering the incidence rates) or reducing functional disability, often present in at-risk individuals regardless of whether psychosis has emerged. Thus far, treatment has primarily targeted attenuated positive symptoms that occur relatively late in the prodrome.