Major Schizophrenia Symptoms: How To Identify This Mental Disorder?


Schizophrenia is a chronic and severe mental disorder that affects how a person thinks, feels, and behaves. It is considered one of the most disabling and emotionally devastating illnesses. About 1% of the population globally has schizophrenia. The symptoms of schizophrenia typically begin in young adulthood between the ages of 16 and 30.

Schizophrenia symptoms fall into three broad categories: positive symptoms, negative symptoms, and cognitive symptoms. Understanding the symptoms can help properly diagnose and treat this complex disorder.

What Is Schizophrenia?

Schizophrenia is a psychotic disorder characterized by a disconnect between thoughts, emotions, and behaviors. People with schizophrenia often experience hallucinations, delusions, disorganized thinking, and impaired cognitive functioning. Schizophrenia impairs basic psychological functions such as memory, attention, and goal-directed behavior.

Schizophrenia Symptoms

There are several subtypes of schizophrenia based on the predominance of certain symptoms. The main subtypes are paranoid schizophrenia, disorganized schizophrenia, catatonic schizophrenia, undifferentiated schizophrenia, and residual schizophrenia. The symptoms vary from person to person and can wax and wane in severity over time.

Schizophrenia typically emerges in the late teenage years or early adulthood. The exact causes are unknown but it likely involves a combination of genetic, neurological, and environmental factors. There is no cure for schizophrenia but with proper treatment, many people can manage their symptoms and lead fulfilling lives.

Major Schizophrenia Symptoms 

The major symptoms of schizophrenia are classified into three categories: 

Positive Symptoms: These refer to psychotic behaviors that are not typically experienced by healthy individuals. The main positive symptoms are:

  • Hallucinations – Seeing, hearing, feeling, tasting, or smelling things that don’t exist. Auditory hallucinations like hearing voices are most common.
  • Delusions – Fixed, falsely held beliefs not based on reality. Common delusions include delusions of persecution, delusions of grandeur, and delusions of reference.
  • Disorganized thinking and speech – Incoherent or nonsense speech patterns. Abruptly switching topics mid-conversation. Making loose associations between unrelated thoughts.
  • Abnormal motor behavior – Includes agitation, repetitive movements, childlike silliness, and lack of inhibition.

Negative Symptoms: These refer to diminished emotional expression and lack of motivation. The primary negative symptoms are:

  • Blunted or flat affect – Reduced expression of emotions via facial expressions, tone of voice, and gestures.
  • Alogia – Reduced speech output. Brief, empty replies to questions.
  • Avolition – Reduction in motivated self-initiated purposeful activities. Difficulty starting or persisting in activities. 
  • Anhedonia – Reduced ability to experience pleasure from previously enjoyable activities.
  • Asociality – Lack of interest in social interactions and relationships. Social withdrawal.

Cognitive Symptoms: These affect the person’s cognitive abilities including:

  • Poor executive functioning – Difficulties with planning, focus, abstract thinking, prioritizing, organizing, and working memory. 
  • Trouble focusing or paying attention
  • Problems with logical thinking and manipulating information in the mind 
  • Difficulty understanding information and using it to make decisions

Also Check: Is There Any Relation Between Abortion And Mental Health?

What Causes Schizophrenia?

The exact causes of schizophrenia are still unknown. Current research suggests a combination of factors contribute to the development of schizophrenia:

  • Genetics – Schizophrenia has a strong hereditary component. Having a close family member with schizophrenia increases your risk. Certain genes are linked to an increased risk. 
  • Brain chemistry – Imbalances in brain chemicals like dopamine, glutamate, and serotonin may contribute to schizophrenia symptoms. 
  • Brain structure – Subtle differences in brain anatomy and cell structure may interfere with neural connectivity leading to schizophrenia. 
  • Prenatal environment – Exposure to viruses or malnutrition in the womb may increase susceptibility.  
  • Childhood trauma or abuse – Highly stressful events in childhood may act as triggers.
  • Drug use – Using marijuana, LSD or amphetamines can induce psychosis in vulnerable individuals.

While these factors can increase risk, schizophrenia can still occur in individuals with no family history or risk factors. Researchers continue to study schizophrenia’s complex causes to improve treatment and prevention.

How To Treat Schizophrenia?

Schizophrenia Treatment

Schizophrenia requires lifelong treatment. While there is no cure, various therapies can effectively manage symptoms. The main treatments for schizophrenia are:

  • Medication – Antipsychotic medications are the first-line treatment for schizophrenia. They help reduce hallucinations, delusions, and paranoia. Second-generation antipsychotics like clozapine are commonly prescribed.
  • Psychosocial treatment – Therapy and counseling provide support, educate patients and families, teach coping strategies, and monitor medication compliance. Cognitive behavioral therapy helps manage symptoms.
  • Social support – Support groups, group therapy, workshops, and other social activities promote reintegration into society. Vocational training and job placement assistance are beneficial.
  • Hospitalization – During acute psychotic episodes, a short hospital stay may be required to stabilize symptoms in a supervised setting.
  • Lifestyle remedies – Getting adequate sleep, avoiding recreational drugs, eating healthy, and regular exercise can help alleviate symptoms. Support groups for families can also help with coping.

With proper treatment, most people with schizophrenia can manage symptoms, function independently, and enjoy fulfilling relationships and work. Early intervention and adherence to the treatment plan are key to a better prognosis.

Read More: What Is Mental Exhaustion? Know The Causes, Symptoms, And Treatment


In summary, schizophrenia is a chronic psychiatric illness with a variety of symptoms categorized as positive, negative, and cognitive. Hallucinations, delusions, irregular thinking, and lack of motivation are among the most common symptoms. Schizophrenia arises from a complex interplay of genetic, neurological, and environmental factors.

Treatment typically involves antipsychotic medications combined with psychosocial therapy and lifestyle changes. While schizophrenia cannot be cured, active management of symptoms is crucial for improving quality of life. Increased awareness and research around this often misunderstood disorder can help reduce stigma and allow patients to thrive.


Q: What age does schizophrenia usually develop?

A: Schizophrenia typically emerges between the late teens and mid-30s. Symptoms most commonly appear between 16-30 years old in men and 25-30 years old in women.

Q: Can schizophrenia symptoms come and go? 

A: Yes, the symptoms of schizophrenia often follow a pattern of relapse and remission. People can experience episodes of acute psychosis followed by periods of recovery where symptoms diminish. Stress often triggers relapses.

Q: Is schizophrenia the same as multiple personality disorder?

A: No. Schizophrenia is a psychotic disorder characterized by hallucinations, delusions, and disorganized thinking. Multiple personality disorder (dissociative identity disorder) is a separate mental condition involving two or more distinct personality states. 

Q: What positive symptoms respond best to medications?

A: Antipsychotic medications are most effective at reducing the positive symptoms of schizophrenia like hallucinations, delusions, and thought disorders. They are less effective at easing negative symptoms like lack of motivation.

Q: Can schizophrenics live independently?

A: Yes, with proper treatment many people with schizophrenia can function independently, maintain relationships and employment, and live fulfilling lives. Symptom management is key.

Dr. Jun Ren is a dedicated and experienced registered dietitian and nutritionist who is committed to helping people achieve their health goals through personalized nutrition plans. With a passion for promoting healthy eating habits and preventing chronic diseases, Dr. Ren has been able to assist numerous clients in improving their overall quality of life.

Leave a Comment