SSRIs were originally created to treat

A) obsessive-compulsive disorder.
B) posttraumatic stress disorder.
C) depression.
D) schizophrenia.

SSRIs (selective serotonin reuptake inhibitors) were originally created to treat depression. While they have been used to treat other mental health conditions such as obsessive-compulsive disorder and posttraumatic stress disorder, their primary purpose was to treat depression. They are not used to treat schizophrenia.