Regarding clinical characteristics (Table 5), we found
that the duration of illness (weeks) was shorter among the
amphetamine psychosis group (mean 0.8±0.9) than the
other psychoses group (mean 2.1±1.7). PANSS scores were
significantly higher among the other psychoses group, PANSSTS (76.27±10.53); PANSS-PS, PANSS-NS or PANSS-GPS
(19.33±7.32, 18.63±6.45 and 39.31±9.27) than among the
amphetamine psychosis group, PANSS-TS (58.43±8.73);
PANSS-PS, PANSS-NS or PANSS-GPS (15.61±4.71,
11.34±4.11 and 28.49±5.61). Also, we found that sudden
onset, sudden remission, poor family support and history of
parental substance abuse are associated with the amphetamine
psychosis group more than the other psychoses group. Parental
mental illness was associated with the other psychoses group
more than the amphetamine psychosis group