What Happens If Schizophrenia Goes Untreated?

Schizophrenia is a serious mental health condition that affects how a person thinks, feels, and behaves. When left untreated, the symptoms do not stay the same — they almost always get worse over time. Untreated schizophrenia leads to a cycle of worsening psychosis, cognitive decline, loss of social function, and a much higher risk of homelessness, hospitalization, and early death. The brain does not heal on its own, and without treatment, the damage can become permanent.

What Are the First Signs That Schizophrenia Is Worsening Without Treatment?

The early phase of untreated schizophrenia is often called the prodromal phase. During this time, a person might withdraw from friends and family, stop caring about their appearance, and start having strange or unusual thoughts. These changes are gradual, which is why many people mistake them for depression or a difficult phase.

As time passes without treatment, positive symptoms like hallucinations and delusions become more intense. The person may begin hearing voices that are critical or commanding. They might develop fixed false beliefs — for example, that they are being watched or that people are trying to harm them. Research published in the journal Schizophrenia Bulletin shows that the longer these symptoms go untreated, the harder they become to manage later.

Without intervention, the person often loses the ability to recognize they are ill. This is called anosognosia, and it affects about 50 percent of people with schizophrenia. When someone does not believe they are sick, they see no reason to seek help, which makes the cycle of worsening symptoms very difficult to break.

What Happens to the Brain When Schizophrenia Is Not Treated?

This is where the evidence is most concerning. Studies using brain imaging have found that untreated psychosis is linked to a loss of gray matter in the brain. Gray matter is the tissue that processes information, controls emotions, and supports memory. A study from the American Journal of Psychiatry found that people with untreated schizophrenia lost brain volume at a faster rate than those who received treatment.

The term researchers use is “duration of untreated psychosis,” or DUP. The longer the DUP, the worse the long-term outcomes. Some studies suggest that after two years of untreated psychosis, the structural changes in the brain become harder to reverse even with medication.

This does not mean the brain stops working entirely. But it does mean that cognitive functions — like attention, planning, and problem-solving — decline. The person may struggle to hold a conversation, keep a job, or manage basic daily tasks. Early treatment helps preserve brain function. Delaying it allows damage to accumulate.

What Happens If Schizophrenia Goes Untreated in Terms of Daily Life?

Untreated schizophrenia almost always leads to a collapse in daily functioning. The person may stop bathing, eating regularly, or taking care of their living space. They might lose their job or drop out of school. Relationships with family and friends often break down because the person’s behavior becomes unpredictable or frightening.

Homelessness is a real risk. The Substance Abuse and Mental Health Services Administration (SAMHSA) reports that people with untreated serious mental illness make up a significant portion of the homeless population. Without treatment, the person cannot hold a job, pay rent, or maintain the social connections that keep people housed.

Another common outcome is contact with the criminal justice system. People with untreated schizophrenia are more likely to be arrested for behaviors related to their illness — like yelling in public, trespassing, or reacting to hallucinations. Police are often the first responders to a mental health crisis, and jails have become de facto psychiatric facilities in many parts of the United States.

Substance use is also very common. Some people with untreated schizophrenia use alcohol or drugs to cope with their symptoms. This makes the condition worse and complicates any future treatment. The combination of untreated psychosis and substance use significantly raises the risk of violence — both toward the person themselves and, in rare cases, toward others.

What Does Research Show About Suicide Risk in Untreated Schizophrenia?

The risk of suicide in untreated schizophrenia is serious and well-documented. The National Institute of Mental Health (NIMH) reports that about 5 to 6 percent of people with schizophrenia die by suicide. That rate is higher than the general population, and it is highest in the early years of the illness — especially when treatment has been delayed.

Suicidal thoughts and behaviors in untreated schizophrenia are often driven by the torment of hallucinations, the despair of losing one’s mind, or the isolation that comes from social withdrawal. A person who hears voices telling them to harm themselves is at immediate risk. Without medication and therapy, these voices can become more commanding and harder to resist.

It is important to understand that most people with schizophrenia are not violent toward others. They are far more likely to harm themselves. Suicide prevention in this population depends heavily on early treatment, social support, and consistent access to mental health care.

Can the Damage From Untreated Schizophrenia Be Reversed?

This is a question that does not have a simple yes or no answer. Some symptoms of schizophrenia respond well to treatment even after a long delay. Antipsychotic medications can reduce hallucinations and delusions in most people, even if they have been untreated for years.

But the cognitive decline — the loss of memory, concentration, and executive function — is harder to recover. Research indicates that early treatment is strongly associated with better cognitive outcomes. Once brain tissue is lost, it does not grow back. The brain can adapt and form new connections, a property called neuroplasticity, but this is not the same as reversing structural damage.

The best chance for recovery comes from early and consistent treatment. This includes medication, therapy, social support, and often case management. When treatment begins early, many people with schizophrenia can live independently, hold jobs, and maintain relationships. When treatment is delayed, the chances of this kind of outcome drop significantly.

That said, it is never too late to start treatment. Even someone who has been untreated for a decade can still benefit. Symptoms like hallucinations and agitation often improve with medication. The person may not return to their previous level of function, but their quality of life can improve. The goal shifts from full recovery to harm reduction and stability.

What Are the Common Barriers to Getting Treatment?

Many people with schizophrenia do not get treatment because they do not believe they are sick. This is not denial in the usual sense — it is a symptom of the illness itself. Anosognosia affects the brain’s ability to perceive its own dysfunction. You cannot convince someone with anosognosia that they need help through logic alone.

Other barriers include lack of access to mental health care. In rural areas, there may be no psychiatrist within a hundred miles. Insurance coverage for mental health treatment is often inadequate. Many people with schizophrenia end up on the streets or in jail before they ever see a doctor.

Stigma is another major barrier. Families may not want to admit that something is seriously wrong. The person themselves may feel shame or fear about being labeled “crazy.” This is one reason why education about schizophrenia is so important. The illness is a brain disorder, not a character flaw. Treating it early is no different from treating diabetes early.

Comparison: Treated vs. Untreated Schizophrenia Over 5 Years

What Should You Do If You Suspect Someone Has Untreated Schizophrenia?

If you are worried about a family member or friend, the first step is to get a professional evaluation. This usually starts with a primary care doctor who can rule out other causes of psychosis, like a brain tumor or drug use. From there, a referral to a psychiatrist is the next step.

Do not try to argue the person into accepting treatment if they do not believe they are sick. This often backfires. Instead, focus on building trust. Talk about specific problems they are experiencing — like trouble sleeping or feeling scared — rather than telling them they have schizophrenia.

In many states, you can call for a mental health evaluation if the person is a danger to themselves or others. This is called an involuntary hold, and it varies by state law. It is not an ideal solution, but it can be a lifesaving one when the person is in crisis.

There are also early intervention programs in some parts of the country. These programs are designed specifically for people experiencing their first episode of psychosis. They combine medication, therapy, family support, and job training. The goal is to treat the illness early and prevent the long-term damage that comes with untreated schizophrenia.