Schizophrenia: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Schizophrenia?
A psychiatrist, a doctor for mental illness, usually leads care for this illness. A psychologist or social worker, who give talk therapy and support, may also help. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is schizophrenia?
Schizophrenia is a serious mental illness that changes how a person thinks, feels, and acts. Good treatments exist. Treatment can help people stay in school, keep a job, live on their own, and enjoy relationships. It is a life-long illness.
Symptoms
Symptoms differ from person to person. They fall into three groups: psychotic, negative, and cognitive. Early signs can be feeling tense, trouble focusing, and trouble sleeping.
- Psychotic symptoms change how a person thinks and sees the world.
- Hallucinations mean seeing, hearing, or feeling things that are not there. Hearing voices is common.
- Delusions are strong beliefs that are not true.
- Thought disorder means unusual thinking and trouble organizing thoughts and speech.
- Negative symptoms include low drive, less interest in daily life, pulling away from others, and trouble showing feelings.
- Cognitive symptoms are problems with focus and memory.
Negative symptoms are sometimes mistaken for depression.
Causes and who gets it
Experts are not sure what causes it. Several things may raise a person's risk. It sometimes runs in families, but having a relative with it does not mean you will get it. Poverty, stress, danger, viruses before birth, and poor food before birth may also play a role. Some people with schizophrenia have small differences in parts of the brain and in how those parts connect.
People are usually diagnosed between ages 16 and 30, after a first episode of psychosis. Psychosis means losing touch with reality. It is rare in younger children.
How doctors diagnose it
No medical test can diagnose it. A psychiatrist should make the diagnosis after talking with the person and family members. The psychiatrist asks how long symptoms have lasted and how daily life has changed. Brain scans and blood tests may be used to look for other conditions with similar symptoms.
Treatment
Antipsychotic medicines are the most effective treatment for this illness. They can make psychotic symptoms less intense and less frequent. Most are taken daily as a pill or liquid. Some come as a shot once or twice a month. If symptoms do not improve, a doctor may try clozapine. People who take clozapine need regular blood tests to check for a dangerous side effect that occurs in 1% to 2% of patients. Side effects at the start can include weight gain, dry mouth, restlessness, and drowsiness. Do not stop a medicine without first talking to a health care provider.
Psychosocial treatments, which build skills and support, help people manage symptoms while they go to school, work, and form relationships. They are often used together with antipsychotic medicine. People who take part in regular psychosocial treatment are less likely to have symptoms return or to be hospitalized. After a first episode of psychosis, a team can provide coordinated specialty care. Compared with usual care, it works better to reduce symptoms and improve quality of life. Treating both schizophrenia and substance use matters, because substance use can get in the way of treatment.
When to see a doctor
Start treatment as soon as possible after a first episode of psychosis. This is an important step toward recovery. Contact your provider if you or a family member sees or hears things that are not there. Also contact your provider if you feel scared or overwhelmed, cannot leave the house, or cannot care for yourself. If you are thinking about harming yourself or others, or hear voices telling you to, call or text 988 (the Suicide and Crisis Lifeline) right away. In a life-threatening situation, call 911. If someone has attempted suicide, call 911 right away and do not leave the person alone.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either can listen to your concerns and refer you to a mental health professional. They can also help check for other conditions that look like schizophrenia.
Common questions
Is schizophrenia the same as split personality?
No, it is not split personality. Split personality is an old name for a different problem. In it, a person has two or more separate identities.
Are people with schizophrenia violent?
No, most people with schizophrenia are not violent. They are more likely than other people to be harmed by others. The risk of harming themselves or others is highest when the illness is untreated or occurs with alcohol or drug misuse.
Can schizophrenia be treated?
Yes, good treatments are available. Medicine and talk-based help often work together. Some people need to try several medicines to find the one that works best.
At what age does schizophrenia usually start?
Most people are diagnosed between ages 16 and 30. Changes in thinking, mood, and social life often appear before the first episode of psychosis.
Sources
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
