There is a small but negligible increase in your likelihood of developing schizophrenia because of your fathers age at the time of your birth. There is no known cause of schizophrenia. There are many theories about what causes schizophrenia but not one of them has been identified as the true cause. Many people believe that schizophrenia is a brain disease. It is also believed that environment and exposure to stress play instrumental roles in the development of schizophrenia.
You have been diagnosed with obsessive-compulsive disorder (OCD). It is not uncommon for people with OCD to become fixated on, what many consider to be the most severe mental health disorder, schizophrenia.
The best way to eliminate fear is to focus on reality. Relative to other mental health conditions, schizophrenia is rare. It is diagnosed in approximately 1 to 2% of the population. Thus, it’s statistically unlikely that you will develop the disorder, especially if you have no symptoms.
If you’re not in treatment, you should be. OCD is highly treatable. Choose a therapist who specializes in anxiety disorders. You may also want to consider taking medication which can also help to control your symptoms. Once your OCD symptoms are under control, this fear will likely dissipate. Please take care.