. As you get older, complications can. . . Most of the time, people do not get schizophrenia after age 45. Schizophrenia is considered early onset when it starts before the age of 18. Women are diagnosed a few years later, at 25-30 or again after menopause. Web. Men in their late teens to early 20s are most likely to be diagnosed. 6,7; Burden of Schizophrenia. In men these signs typically appear from age 20 to 25 and in women from age 25 to 30. The average age range for a female to develop schizophrenia is roughly ages 25-29 (18-21 in males). . . . . Web. Feb 11, 2022 · Schizophrenia affects men and women equally. . . . The reasons for the age difference between genders are not well understood. In women, symptoms typically begin in the late 20s. Unfortunately although we do not know what causes schizophrenia, there is documentation of many common early signs that someone may be developing this illness. 3-1. Results: The incidence of schizophrenia was two to three times higher among males than among females. . Among younger patients with schizophrenia, women tend to have less severe symptoms than men and better outcomes; however, there are fewer gender differences among older patients with.