Overview
Schizophrenia is a long-term mental health condition that affects how a person interprets reality and interacts with the world. People may experience psychosis, which can include hearing or seeing things others do not, fixed false beliefs, or severely confused thinking. Symptoms and severity vary from person to person, and periods of worsening and improvement can happen over time.
Key Symptoms
Symptoms are often grouped into psychotic symptoms, changes in thinking and behavior, and reduced emotional expression or motivation. A person may hear voices, have unusual beliefs, speak in a way that is hard to follow, withdraw socially, or have trouble with attention and memory. Some people also have sleep problems, anxiety, depressed mood, or difficulty managing daily tasks.
Causes and Risk Factors
There is no single known cause of schizophrenia. It is thought to result from a mix of genetic factors, brain development and chemistry, and environmental influences. Risk may be higher in people with a family history of psychotic disorders, certain pregnancy or birth complications, or substance use that can trigger or worsen psychosis in some people.
Who Is Affected
Schizophrenia occurs in people of all countries, cultures, and backgrounds. Symptoms often start in late adolescence or early adulthood, though children and older adults can also be affected. People with limited access to mental health care may face delays in diagnosis and treatment.
Diagnosis and Tests
Diagnosis is made by a qualified health professional based on symptoms, medical history, mental health history, and observation over time. The evaluation may include questions about mood, thoughts, sleep, substance use, and safety, as well as physical examination or tests to rule out other medical causes of psychosis. There is no single blood test or scan that confirms schizophrenia on its own.
Treatment Categories
Treatment commonly includes antipsychotic medicine, psychological therapies, education for the person and family, and support for school, work, and daily living. Some people may need hospital care during severe episodes, especially if there is risk of harm or major difficulty caring for themselves. Ongoing follow-up is important because symptoms can return if treatment is interrupted.
Living With It
Living with schizophrenia can be challenging, but many people improve with consistent care and support. Helpful steps may include keeping regular appointments, having a crisis plan, involving trusted family or friends when appropriate, and watching for early warning signs of relapse. Stigma can be a major barrier, so respectful communication and community support matter.
Diet and Lifestyle
Healthy routines can support overall well-being, though they do not replace medical treatment. Regular sleep, physical activity, avoiding alcohol and non-prescribed drugs, and staying connected with supportive people may help daily functioning. Some treatments can affect weight and physical health, so routine general medical care is also important.
When to Seek Medical Care
Seek medical care promptly if someone has hallucinations, strongly unusual beliefs, confused speech, major changes in behavior, or difficulty functioning at school, work, or home. Care is also important if symptoms are getting worse, medicines are causing troubling effects, or the person is stopping treatment. Early evaluation can also help identify other conditions that may look similar.
When It May Be an Emergency
Get urgent help right away if a person may harm themselves or someone else, is severely agitated, is unable to care for basic needs, or is so confused that they cannot stay safe. Emergency help is also needed for suicidal thoughts, command hallucinations telling someone to act, or sudden psychosis linked with substance use or a medical problem. Use local emergency services or the nearest emergency department.