what age does schizophrenia occur
1 The average age of onset is 18 in men and 25 in women. 2  Schizophrenia onset is quite rare for people under 10 years of age, or over 40 years of age. 3  The diagram below demonstrates the general age of onset trends for schizophrenia in men and women, from a representative study on the topic. Men tend to get develop schizophrenia slightly earlier than women; whereas most males become ill between 16 and 25 years old, most females develop symptoms several years later, and the incidence in women is noticably higher in women after age 30. 2  The average age of onset is 18 in men and 25 in women.