Schizophrenia has a number of symptoms. Still, it is dangerous to diagnose yourself. If you are delisional, how will you know it's not a delision? The best thing to do is to go to a doctor or a psychiatrist to get diagnosed. Even if you don't have schizophrenia, you may have another form of mental illness.
Schizophrenia can affect anyone at any age but most commonly occurs in the ages from adolescence to age 30. Still, it can come on at anytime. It is not common for young children to have it and when they do, it is very difficult to diagnose. There are clinical tests and evaluations that can be conducted by a professional that can help to determine if you have this serious mental disorder and if you do, what can be done about it.