Schizophrenia and early psychosis: first signs, causes and what helps

Schizophrenia used to be called jeongsin-bunyeol-byeong in Korean, a name meaning “mind-splitting disease”. Because the name fed prejudice, the Korean Neuropsychiatric Association replaced it around 2011-2012 with jo-hyeon-byeong, which means “tuning the strings of an instrument” (Cho et al., 2018; Kim et al., 2023). The English name also comes from words meaning a split mind, but it referred to mental functions such as thinking and feeling coming apart, not to a personality dividing into several (APA, n.d.).

The World Health Organization’s ICD-11 classifies schizophrenia as one of the primary psychotic disorders, in which the ability to judge what is real is seriously disturbed. It is diagnosed when several symptoms such as delusions, hallucinations and disorganised thinking and speech are present most of the time for a month or more, and are not caused by a physical illness or a substance (WHO, 2024). The US diagnostic manual (DSM-5-TR) looks for at least a month of clear symptoms within a disturbance lasting six months or more in total (Keshavan, 2025). This guide does not print the list of criteria.

Psychosis is a set of symptoms in which some contact with reality is lost; schizophrenia is one of several conditions in which psychosis appears. Some people have psychosis once and are never diagnosed with schizophrenia or any other disorder (NIMH, 2023). Korea’s national mental health portal notes that the everyday Korean word jeongsin-byeong (literally “mental disease”) carries prejudice and is not used in psychiatry, which speaks of psychosis or psychotic symptoms instead (National Center for Mental Health, 2020).

The World Health Organization estimates that about 27 million people worldwide, or 1 in 300, live with schizophrenia. It usually begins in the late teens or twenties, and tends to start earlier in men than in women (WHO, 2026). Korea’s National Mental Health Survey left schizophrenia out of its 2021 round, because a community sample captures too few cases to estimate it accurately (Rim et al., 2023). A study of Korean national health insurance claims found that in 2017, 0.36% of people were treated for schizophrenia, a figure that may be too low because people not in treatment are missing (Jung et al., 2021). mind.io does not offer a schizophrenia test. This guide sets out the symptoms and early signs, conditions that can look similar, causes, treatments with evidence and recovery, how to help someone close to you, and where to turn when it is urgent.

Schizophrenia has several kinds of symptoms. Positive symptoms add experiences that were not there before: hallucinations, which feel vivid and real although nothing outside is causing them, such as hearing sounds others cannot hear, and delusions, false beliefs held firmly even against the evidence (APA, n.d.). Korea’s national mental health portal says the most common are voices that criticise or insult the person and persecutory delusions, the belief that someone is out to harm them (National Center for Mental Health, 2020). Negative symptoms, in which drive, expression and pleasure shrink, are sometimes mistaken for depression (NIMH, 2024) or for laziness or rudeness, which can strain relationships with family and friends (NHS, 2023a).

Hallucinations feel completely real to the person having them (NHS, 2023a). People who hear voices may have been hearing them for a long time before family or friends notice (NIMH, 2024). It is also common for people not to recognise these experiences as symptoms (National Center for Mental Health, 2020), and this is usually part of the illness itself rather than stubbornness or denial (American Psychiatric Association, 2024).

A prodromal phase often comes weeks or months before the first psychotic symptoms. During it, interest in work or other people may fade, washing and grooming may slip, day and night may swap, and mild psychotic symptoms may appear along with anxiety or low mood (WHO, 2024). Changes such as growing suspicion, spending far more time alone or a sudden drop in grades or work performance may show first (NIMH, 2023). These changes are easily mistaken for a teenage “phase” (NHS, 2023a), but they are also common with depression or stress, so no single change tells you much.

In a meta-analysis of 130 studies that followed help-seeking young people whom specialists had assessed as being at high risk of psychosis, 25% developed psychosis within three years (Salazar de Pablo et al., 2021). Put the other way, three in four did not. Many of them have anxiety, depression or substance use problems as well, so they need help for what they are going through now even if psychosis never comes (Fusar-Poli et al., 2013). Meanwhile, a longer stretch of psychosis without treatment has been linked with more severe symptoms later and a lower chance of remission (Howes et al., 2021). It is common for people to have psychotic symptoms for more than a year before starting treatment (NIMH, 2023), but given that link, getting assessed early is better than waiting to see.

Experiences that drift away from reality occur along a continuum in the general population and are usually brief, and similar experiences that carry meaning within a religion or culture are not considered illness (WHO, 2024). In the WHO World Mental Health Surveys of more than 31,000 adults in 18 countries, 5.8% had had a hallucination or delusion-like experience at least once in their lives, and about a third of them said it had happened only once (McGrath et al., 2015). Having had such an experience once does not mean schizophrenia, but if it keeps happening or starts to disrupt your life, get it checked.

Schizophrenia is not the only cause of psychosis. It can also come from severe sleep loss, some prescription medicines or alcohol or drug problems (NIMH, 2023), and from suddenly stopping alcohol or drugs after long use (NHS, 2023b). If you plan to stop drinking, read the safe ways to cut down in Alcohol use disorder first. There is also acute and transient psychotic disorder, which starts suddenly and lasts no more than three months, most often a few days to a month (WHO, 2024). Psychotic symptoms that appear only during a manic or severe depressive episode belong to a mood disorder (see Bipolar disorder and Depression symptoms), and in schizoaffective disorder, schizophrenia symptoms and a mood episode run together for a month or more (WHO, 2024).

Postpartum psychosis after childbirth is rare but an emergency (see Postpartum depression). Flashbacks, in which a traumatic memory comes back vividly, are not a feature of schizophrenia (WHO, 2024; see PTSD). Brief psychosis-like experiences at times of intense emotion are covered in Borderline personality disorder, and delusional jealousy, a fixed belief that a partner is unfaithful, in Jealousy in relationships. Schizoid personality, in which the wish for close relationships is itself weak, is a personality pattern, not schizophrenia (APA, n.d.; see Avoidant personality disorder).

Schizophrenia is not multiple personality. A state in which several identities take turns is dissociative identity disorder, a completely different diagnosis (NIMH, 2024; APA, n.d.). Psychosis and psychopathy are completely different things too (NHS, 2023b); psychopathy is covered in Psychopathy.

No single cause of schizophrenia has been identified (WHO, 2026). Data on more than 30,000 Danish twin pairs put its heritability at 79%, yet when one identical twin had schizophrenia, the other twin also developed it in only 33% of cases (Hilker et al., 2018). Even with identical genes, two in three did not develop it, so genes are not destiny. Genetic variants linked with schizophrenia have been found at 287 places in the genome (Trubetskoy et al., 2022), and no single gene causes the disorder by itself (NIMH, 2024). Most children of a parent with schizophrenia never develop it (National Center for Mental Health, 2020).

Several studies have found that the more cannabis people use, the higher their risk of psychosis tends to be. The heaviest users had about 3.9 times the odds of schizophrenia and other psychosis-related outcomes compared with non-users, though the authors added that causality has not been firmly established (Marconi et al., 2016). In a study across 11 European sites, the odds of psychotic disorder were highest with daily use, especially of high-potency cannabis (Di Forti et al., 2019). It is still unclear whether drugs directly cause symptoms or whether people who are vulnerable are more likely to use them (NHS, 2023a).

Meta-analyses have also linked psychosis with childhood adversity such as abuse or bullying (Varese et al., 2012), with city living (Vassos et al., 2012) and with migration (Selten et al., 2020). These studies show associations, so such experiences do not mean schizophrenia will follow. Stressful experiences do not cause schizophrenia, but they can trigger it in someone who is already vulnerable (NHS, 2023a).

It was once claimed that a cold, domineering mother causes schizophrenia, but researchers abandoned that idea long ago (APA, n.d.). Parenting does not cause schizophrenia. Once it has begun, though, a lot of criticism or hostility at home can make relapse more likely (APA, n.d.; National Center for Mental Health, 2020), which is why families learning about the illness and ways of talking together is part of treatment. Sleep is something you can work on too. In a trial of 3,755 university students with insomnia, treating insomnia also slightly reduced paranoia and hallucination-like experiences, although the study did not involve people with schizophrenia (Freeman et al., 2017). For sleep problems, see Insomnia: what helps.

Medication is central to reducing symptoms and preventing relapse. In an analysis of 65 trials in which people whose symptoms had settled either stayed on medication or were switched to a placebo, 27% of those who stayed on medication relapsed within a year, against 64% on placebo. Side effects such as weight gain, movement problems and drowsiness were also more common, though, so benefits and side effects have to be weighed together (Leucht et al., 2012). After a first episode, most people take medication for one to two years, and for longer if the illness comes back (NHS, 2023a). If side effects are hard to bear, do not stop on your own: tell your doctor straight away. Stopping can bring symptoms back (NHS, 2023a).

About 23% of people with a first episode had treatment-resistant illness, not responding well enough to two or more medicines (Siskind et al., 2022). There are other treatment options for this situation (NICE, 2014), so do not give up if a medicine does not work; discuss the next step with your doctor. Early intervention services for early psychosis provide medication, psychological therapy, family education and support to return to study or work through one team, and they have been more effective than usual care at reducing symptoms, improving quality of life and getting people back to work or school (NIMH, 2024). In an analysis of 10 randomised controlled trials, such services did better than usual care on all 13 outcomes that could be pooled (Correll et al., 2018).

In cognitive behavioural therapy for psychosis, people practise understanding and coping with experiences such as voices and delusions in new ways. Added to medication, it appeared to reduce positive symptoms in people who were moderately ill, but the effect was small to medium (Bighelli et al., 2018) and shrank in stricter studies where assessors did not know which group people were in (Jauhar et al., 2014). Family intervention, in which families learn together about the illness, relapse signs, communication and problem solving, reduced relapse. In an analysis comparing 90 randomised controlled trials, almost every form worked, and family psychoeducation alone did better than more elaborate programmes (Rodolico et al., 2022), although some reviewers warn that the effects may be somewhat overstated because of poor study quality (Pharoah et al., 2010).

For people who want to work, supported employment of the “individual placement and support” kind, which helps people find a job first and then supports them in it, can help: in an analysis of randomised controlled trials in people with severe mental illness, it raised the chance of actually getting a job by about 1.6 times compared with usual vocational services (Frederick & VanderWeele, 2019). Programmes with around 90 minutes a week of moderate-to-vigorous exercise reduced symptoms (Firth et al., 2015). Many people say peer support and hearing voices groups, where people with similar experiences share them, eased loneliness and helped them learn ways to cope (Corentin et al., 2023), but high-quality studies of their effects are still lacking (Chien et al., 2019), so they are best seen as an addition to treatment rather than a replacement.

Recovery figures depend heavily on how strictly recovery is defined. In an analysis of studies that followed people after a first episode of psychosis, 58% reached remission and 38% recovered, and recovery rates changed little after the first two years, so a steadily worsening course was not typical (Lally et al., 2017). By a stricter standard, improvement in both symptoms and social life, with at least one lasting two years or more, about 1 in 7 people with schizophrenia recovered (Jääskeläinen et al., 2013). Recovery does not have to mean being free of every symptom (Royal College of Psychiatrists, 2025).

When family or friends hear a belief that is not true, they often wonder whether to argue, go along with it or let it pass. The Royal College of Psychiatrists suggests it may help more to acknowledge the feelings the belief causes than the belief itself. If someone is afraid of being watched, for example, you could answer the fear rather than the belief, with something like “That must be really scary. I’m here with you. What would help right now?” (Royal College of Psychiatrists, 2025). Remember that the beliefs or hallucinations feel very real to them (NIMH, 2024).

Be respectful, supportive and kind, without putting up with dangerous or inappropriate behaviour (NIMH, 2024). Do not blame the person or anyone else, and do not tell them to pull themselves together (NHS, 2023a). Once things are stable, it helps to learn the warning signs of relapse together: small changes such as losing appetite, feeling anxious or sleeping badly can be signs (NHS, 2023a). Agree in advance who to contact in a crisis. Ways to talk with someone who refuses treatment are also in the FAQ of Depression: what helps.

Caring is tiring. UK guidance says carers should be offered their own education and support, starting early (NICE, 2014). Do not try to carry it alone; it is fine for a family member to seek advice first from the services described below.

Stigma is another hurdle. The World Health Organization notes that people with schizophrenia meet strong and common prejudice, which can shut them out of social life and strain their ties with family and friends (WHO, 2026). In Korea’s 2024 national survey of mental health knowledge and attitudes, 39.9% correctly recognised a description of schizophrenia, and 31.9% said people with the problem described were dangerous to others, far more than for a description of depression (11.9%) (Ministry of Health and Welfare, 2024). Yet most people with schizophrenia never commit an act of violence, and they are more likely to be victims of violence than perpetrators (Royal College of Psychiatrists, 2025). The details are in the FAQ below.

If someone has barely slept for days and is confused, seems likely to do something dangerous out of fear, or is at risk of harming themselves or others, get urgent psychiatric help without delay. If anyone is in immediate danger, contact your local emergency services. In Korea, calling the mental health crisis line 1577-0199 in a crisis with a risk of harm to self or others can bring a mental health professional out to the scene (National Center for Mental Health, 2020). When someone’s safety or that of others is seriously at risk, treatment in hospital may be arranged through the procedures set out in law.

Physical health needs attention too. People with schizophrenia had about 2.5 times the risk of death of the general population (Correll et al., 2022), much of it from physical illnesses such as heart and metabolic disease (WHO, 2026). Have blood pressure, blood sugar and weight checked regularly. Stopping smoking has also been shown to improve mental health in people with schizophrenia (NHS, 2023a). The risk of suicide is also higher. In a Danish study that followed people for up to 36 years after their first contact with psychiatric hospital care, 6.55% of men and 4.91% of women with schizophrenia died by suicide. That is far higher than among people without a mental disorder (0.72% of men, 0.26% of women), but seen the other way, most did not die by suicide (Nordentoft et al., 2011). The risk is highest early in the illness (NIMH, n.d.) and can also be raised after an acute episode or a hospital stay (NHS, 2023a), and receiving and continuing effective treatment was the only consistent protective factor (Hor & Taylor, 2010). If you have thoughts of harming yourself, please do not carry them alone. Reach out to a crisis line right away: call or text 988 in the US and Canada, call Samaritans on 116 123 in the UK and Ireland, or find a line at findahelpline.com elsewhere. If you are in immediate danger, contact your local emergency services.

A doctor or a mental health professional is a good place to start. In Korea, help is available from psychiatrists and local community mental health welfare centres, which handle early detection of mental illness, early intervention for young people, case management for severe mental illness and links to a treatment-cost support programme; calling the mental health crisis line 1577-0199 (24 hours) connects you to a nearby centre (Ministry of Health and Welfare, 2025). If low mood has lasted more than two weeks, the depression check-in (PHQ-9) can show where you are now, but it is not a test for schizophrenia.

Q. Is there a schizophrenia test? A. mind.io does not offer a schizophrenia test. Research and clinical services use a questionnaire that picks out, among people seeking help, those who need a detailed interview (the PQ-16), and a clinician interview (the CAARMS), but even these are screening and assessment steps, not a diagnosis (Ising et al., 2012; Yung et al., 2005). No blood test or brain scan confirms schizophrenia (Keshavan, 2025); it is diagnosed through an interview with a psychiatrist (National Center for Mental Health, 2020).

Q. I heard a voice once. Do I have schizophrenia? A. That alone does not mean so. Some 5.8% of adults have had a hallucination or delusion-like experience at least once in their lives, and for about a third of them it happened only once (McGrath et al., 2015). Severe sleep loss, medicines and alcohol are other possible causes (NIMH, 2023). If it happened only as you were falling asleep or waking up, it may be a sleep-related hallucination, as in sleep paralysis. But if it keeps happening, frightens you or disrupts your life, get checked without delay.

Q. Are people with schizophrenia dangerous? A. Most people with schizophrenia are not violent (NIMH, 2024). In a meta-analysis of 20 studies, people with psychosis had about 2.1 times the odds of violence of the general population when they had no alcohol or drug problems and about 8.9 times when they did, a level similar to that of people with substance problems but no psychosis; most of the extra risk was explained by substance use (Fazel et al., 2009). A Korean study of police statistics from 2012 to 2016 found that the overall crime rate of people with schizophrenia was about a fifth of the general population’s and lower for most offences, including violence and theft; rare serious crimes such as murder and arson were relatively more common, but there were fewer than 1 murder and about 1 to 2 arsons per 10,000 people a year. The mental state in police records was based on statements by suspects and their families (Kim, 2019). Conversely, people with a psychotic disorder were 4 to 6 times as likely as the general population to be victims of crime (de Vries et al., 2019). The likelihood of violence is lower when people are in treatment (Royal College of Psychiatrists, 2025).

Q. Can it be cured? A. It varies from person to person. The World Health Organization says at least one in three people with schizophrenia can fully recover (WHO, 2026). Some people who are treated early never have another psychotic episode (NIMH, 2023), but relapse is common when medication is stopped (Leucht et al., 2012). Why the figures depend on the definition is explained under “Treatments with evidence, and recovery” above.

Q. Will I have to take medication for life? A. It varies. After a first episode, most people continue for one to two years, and for longer if the illness comes back (NHS, 2023a). UK guidance says people should be told that the risk of relapse is high if they stop medication within the first one to two years (NICE, 2014). If you want to reduce or stop, do not decide alone: plan it with your doctor.

Q. Is it inherited? A. Genes play a large part, but it is not a hereditary disease in the simple sense. Even among identical twins, when one had schizophrenia the other developed it in only 33% of cases (Hilker et al., 2018), and most children of a parent with schizophrenia never develop it (National Center for Mental Health, 2020).

Q. My family member refuses treatment. A. Not recognising the symptoms as illness is usually part of the illness itself, not stubbornness (American Psychiatric Association, 2024). Rather than arguing about the beliefs, start by talking about things they also find hard, such as sleep or anxiety, and seek advice yourself first from a mental health service (in Korea, the crisis line 1577-0199 or a community mental health centre). If anyone is in immediate danger, contact your local emergency services.

Q. The voices keep coming and I feel so bad that I want to disappear. A. Please do not carry that alone. Reach out to a crisis line right away: call or text 988 in the US and Canada, call Samaritans on 116 123 in the UK and Ireland, or find a line at findahelpline.com elsewhere. If you are in immediate danger, contact your local emergency services. The pain you feel now can ease with treatment.

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