According to the Diagnostic and Statistical Manual For Mental Health Disorders (DSM), the book that professionals use to diagnose mental health disorders, a diagnosis is only made when an individual meets a certain number of criteria associated with each disorder. Derealization and depersonalization are not symptoms of schizophrenia. You also did not describe having any other symptoms of schizophrenia. Thus, a schizophrenia diagnosis is unlikely.
Generally speaking, it’s not uncommon for people with anxiety to fear that they might develop schizophrenia. People with anxiety tend to fixate on what they consider to be “worst-case scenarios.” For some people, schizophrenia would constitute a worst-case scenario.
Derealization and depersonalization are often associated with traumatic experiences and trauma-related disorders. Anecdotally, they also tend to be associated with people who have had negative experiences with drug use, marijuana in particular. Using drugs and subsequently experiencing feelings of derealization and or depersonalization seems to be a relatively common experience. I receive many letters like yours from people who are dealing with the psychological aftermath of their illicit drug use.
Thankfully your symptoms are improving but to protect your psychological health, it would be in your best interest to never again use illicit drugs. Illicit drug use is dangerous for the very reasons that you have described in your letter.
Because you continue to experience anxiety, consider consulting a mental health professional. Depending upon the nature and intensity of your symptoms, medication might also be beneficial. Please take care.
Dr. Kristina Randle