Depersonalization as a symptom (not as a disorder) is quite common in college-age populations

depersonalization disorder

If you are worried that you are suffering from depersonalization depression and bipolar disorder, you will need to see a doctor. A doctor can offer treatment.

Depersonalization disorder is present in Schizophrenics in most cases, But Schizophrenics tend to develop Psychosis which disables them completely from reality, thus Schizophrenics are not aware nor can tell the difference between the internal and external world. Whereas individuals with Depersonalization disorder temporarly have fragmentation of reality.

Derealization and depersonalization sindrom.