People diagnosed with schizophrenia are more likely to have been born in winter or spring (at least in the northern hemisphere), which may be a result of increased rates of viral exposures in utero.
==== Razvojni dejavniki ====Dejavniki, kot so hipoksija in okužbe, stres in nedohranjenost matere med nosečnostjo, lahko povzročijo rahlo povečanje tveganja za shizofrenijo kasneje v življenju.