Background Early identification and specialised treatment of individua
ls with enduring positive symptoms may assist in alleviating symptoms
and has the potential to change the course of illness. Method Prevalen
ce and descriptive data on enduring positive symptoms in two first-epi
sode samples are outlined. Attempts to incorporate the focus of early
intervention for persisting psychosis into routine clinical care of in
dividuals with first-episode psychosis are described. Results Of the 2
27 individuals with first-episode psychosis who were assessed using th
e Brief Psychiatric Rating Scale at 3/6 months and 12 months following
initial stabilisation (from a total sample of 347), 6.6% experienced
enduring positive symptoms at all three time points.When the analysis
was restricted to schizophrenia, schizophreniform and schizoaffective
disorders (n=158) the percentage increased to 8.9%.These patients had
significantly longer mean duration of untreated psychosis prior to ini
tiation of treatment and, at 12-month follow-up, significantly higher
depression and poorer psychosocial functioning Conclusions The associa
tion of untreated psychosis with treatment resistance supports the arg
ument for early intervention as soon as possible following the onset o
f psychotic symptoms.