There is no test that can make a schizophrenia diagnosis. People with schizophrenia usually come to the attention of a mental health professional after others see them acting strangely.
Doctors make a diagnosis through interviews with the patient as well as with friends and family members.
Psychiatrists have the most experience with diagnosing schizophrenia. A psychiatrist or other licensed mental health professional should be involved in making a schizophrenia diagnosis whenever possible.
Symptoms in teens can come on gradually over 9 months or more. They can sometimes imitate those of other problems such as anxiety or depression. Especially at first, symptoms may look like the stuff of typical teen years: bad grades, changing friends, trouble sleeping, or irritability.
But there are some early warning signs in teens that show up as changes in thinking, emotions, and behavior.
Changes in Thinking
Lack of concentration or ability to follow a train of thought
Seeing or hearing things that aren't real (hallucinations)