Those who go on to develop schizophrenia may experience transient or self-limiting psychotic symptoms and the non-specific symptoms of social withdrawal , irritability , dysphoria , and clumsiness during the prodromal phase .
During the pre-onset phase , people who go on to develop schizophrenia might have brief or self-limiting serious or violent symptoms , as well as the non-specific symptoms of social withdrawal , annoyance , a general feeling of extreme unhappiness , and clumsiness .