Identifying psychotic behavior involves recognizing when someone has lost touch with reality, which may include seeing or hearing things that aren’t there or holding false beliefs that others don’t share. Early recognition and professional assessment can make a significant difference in helping people receive the care they need.

Introduction: Who Should Seek Diagnostic Evaluation

Anyone experiencing unusual changes in their thoughts, perceptions, or behavior should consider seeking medical evaluation. Psychosis, which refers to a disconnection from reality, can affect anyone and appears more commonly than many people realize. Studies suggest that approximately three percent of all people will experience a psychotic episode at some point during their lifetime, meaning these symptoms occur in roughly three out of every hundred individuals.^[1]

Family members, friends, teachers, school counselors, or coworkers who notice concerning changes in someone’s behavior should encourage that person to seek help. If someone begins hearing voices that others don’t hear, seeing things that aren’t there, or expressing beliefs that seem disconnected from reality, these signs warrant immediate medical attention. The sooner psychosis is identified and treated, the more effective the treatment tends to be.^[2]

Young people between the ages of sixteen and thirty-five deserve particular attention, as the first episode of psychosis typically occurs during a person’s late teens or early twenties. However, psychotic symptoms can emerge at any age and may result from various causes, including mental health conditions, physical illnesses, medication side effects, or substance use. Anyone experiencing significant changes in their ability to think clearly, communicate effectively, or distinguish what is real from what is not should seek professional evaluation without delay.^[3]

Recognizing the Main Symptoms of Psychosis

Understanding the symptoms of psychotic behavior is the first step toward seeking appropriate diagnosis. The three main symptoms associated with psychosis include hallucinations, delusions, and disordered thinking. These symptoms can appear individually or in combination, and the specific pattern varies from person to person.^[4]

Hallucinations involve experiencing sensory perceptions that don’t exist in reality but feel completely real to the person having them. The most common type involves hearing voices that other people cannot hear. These voices might speak directly to the person, comment on their actions, or talk amongst themselves. Visual hallucinations mean seeing people, shapes, or colors that aren’t actually present. Less commonly, people experience hallucinations involving touch, such as feeling someone touching them when no one is there, or smell and taste hallucinations, where they perceive odors or flavors that others don’t detect.^[5]

Delusions are false beliefs that someone holds onto very strongly, even when presented with clear evidence that these beliefs aren’t true and when others don’t share these beliefs. A person with paranoid delusions might believe that someone is plotting against them or constantly monitoring them. Grandiose delusions involve believing one has special powers, authority, or an important identity, such as thinking they’re the president of a country or possess supernatural abilities. Reference delusions make people believe they’re receiving special messages through television shows, songs, or advertisements. Control delusions involve believing that outside forces, whether aliens, specific groups, or vague entities, are controlling their thoughts or actions.^[6]

Disordered thinking affects how a person processes and expresses their thoughts. This might manifest as speech that jumps rapidly from one topic to another without logical connection, speaking very quickly or very slowly, using the wrong words to describe things, making up new words, or experiencing sudden interruptions in their train of thought that cause abrupt pauses in conversation. A person might string together sentences that don’t make sense or have difficulty concentrating and remembering information.^[7]

Diagnostic Methods for Identifying Psychotic Behavior

Diagnosing psychosis involves a comprehensive evaluation process designed to rule out other conditions and identify the underlying cause. There is no single test that can definitively diagnose psychotic behavior. Instead, healthcare professionals use a combination of assessments and examinations to understand what’s happening and determine the most appropriate treatment approach.^[8]

Physical Examination and Medical History

The diagnostic process typically begins with a thorough physical examination. A healthcare provider will conduct this exam to rule out other medical problems that could cause similar symptoms and check for any related complications. During this examination, the doctor will assess the patient’s overall physical health, checking vital signs such as blood pressure, heart rate, temperature, and breathing rate. This initial assessment helps identify whether physical health issues might be contributing to the symptoms.^[9]

Taking a detailed medical history is equally important. The healthcare provider will ask about the patient’s personal health background, including any previous mental health conditions, physical illnesses, medications currently being taken, and family history of mental health conditions. Understanding the timeline of when symptoms began, how they’ve progressed, and what circumstances might have triggered them provides valuable context for making an accurate diagnosis.^[10]

Mental Health Evaluation

A mental health professional, such as a psychiatrist or psychologist, will conduct a comprehensive mental health evaluation. This assessment involves observing how the person looks and behaves, noting their appearance, manner of speaking, and overall demeanor. The professional will ask detailed questions about the person’s thoughts, moods, any hallucinations or delusions they’re experiencing, and whether they have thoughts about harming themselves or others.^[11]

The mental health evaluation also explores the person’s current level of functioning. Questions might cover how symptoms are affecting daily activities, work or school performance, relationships with family and friends, and ability to care for themselves. The evaluator uses standardized criteria from the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, commonly referred to as the DSM-5, which provides specific guidelines for identifying psychotic disorders.^[12]

Laboratory Tests and Screening

Various laboratory tests help rule out physical conditions or substance use that might be causing psychotic symptoms. Blood tests can detect infections, check hormone levels, assess vitamin deficiencies, and identify other medical conditions that might affect brain function. For example, thyroid problems, vitamin B12 or B1 deficiencies, and certain hormonal disorders can all produce symptoms that resemble psychosis.^[13]

Screening for alcohol and drug use is a standard part of the diagnostic process. Substance use, including recreational drugs like cannabis, cocaine, or amphetamines, as well as misuse of prescription medications or alcohol, can trigger psychotic symptoms. Laboratory tests can detect the presence of these substances and help determine whether they’re contributing to the person’s symptoms. Understanding whether substance use is involved helps guide treatment decisions.^[14]

Imaging Studies

Healthcare providers may order imaging studies to examine the brain and rule out structural problems that could cause psychotic symptoms. A Computed Tomography scan, or CT scan, uses X-rays and computer technology to create detailed images of the brain, helping identify tumors, bleeding, or other abnormalities. Magnetic Resonance Imaging, or MRI, uses powerful magnets and radio waves to produce even more detailed pictures of brain structures, which can reveal subtle changes that might explain symptoms.^[15]

These imaging tests are particularly important when symptoms appear suddenly, when there’s been a head injury, or when the healthcare provider suspects a physical cause for the psychotic symptoms. Brain infections like encephalitis or meningitis, strokes, tumors, or conditions like multiple sclerosis can all potentially cause psychotic symptoms, and imaging studies help identify or rule out these possibilities.^[16]

Distinguishing Between Different Conditions

An essential part of diagnosis involves determining whether psychotic symptoms are part of a specific mental health condition or result from another cause. Healthcare professionals must distinguish between various possibilities including schizophrenia, bipolar disorder with psychotic features, major depression with psychotic features, brief psychotic disorder, and other conditions within the spectrum of psychotic disorders.^[17]

This differentiation matters because treatment approaches may vary depending on the underlying condition. For instance, someone with brief psychotic disorder might experience symptoms for only a short period and may not need long-term medication, while someone with schizophrenia typically requires ongoing treatment. The diagnostic process carefully examines how long symptoms have lasted, what specific symptoms are present, and how they affect the person’s functioning to make these distinctions.^[18]

Assessment Criteria for Clinical Trial Qualification

When individuals with psychotic disorders consider participating in clinical trials, they undergo additional diagnostic assessments beyond standard clinical evaluation. These assessments help researchers determine whether someone meets the specific criteria required for a particular study and ensure that participation will be safe for the individual.^[19]

Clinical trials typically have strict eligibility criteria that define exactly what type of psychotic symptoms or diagnosis participants must have. Researchers use standardized diagnostic tools and rating scales to measure symptom severity, duration, and specific characteristics. These measurements help ensure that all participants in a trial have similar baseline conditions, which makes it possible to accurately evaluate whether a new treatment is working.^[20]

Baseline assessments for clinical trial qualification often include detailed psychiatric evaluations using structured interview formats. These interviews systematically assess all aspects of psychotic symptoms, including the type, frequency, and intensity of hallucinations and delusions. They also evaluate negative symptoms, which involve a decrease in normal functioning such as reduced emotional expression, decreased motivation, or social withdrawal. Researchers document this information carefully to track any changes that occur during the trial.^[21]

Laboratory tests form another crucial component of clinical trial screening. Blood tests might check kidney and liver function to ensure the person can safely metabolize the medications being tested. Heart function tests, including electrocardiograms, help identify any cardiovascular issues that might make participation risky. If the trial involves brain imaging studies, baseline scans are obtained before treatment begins so researchers can compare them to scans taken later.^[22]

Cognitive function testing may be required for trials investigating treatments that aim to improve thinking and memory problems associated with psychotic disorders. These tests measure attention, memory, problem-solving abilities, and processing speed. Understanding a person’s cognitive baseline helps researchers determine whether a treatment affects not just psychotic symptoms but also cognitive functioning.^[23]

Safety screening is paramount in clinical trial assessments. Healthcare providers carefully review any other medical conditions the person has, medications they’re currently taking, and their history of substance use. This information helps identify potential risks and ensures that participating in the trial won’t harm the individual. Women of childbearing age typically need pregnancy tests, as many experimental treatments haven’t been studied for safety during pregnancy.^[24]

The assessment process also evaluates a person’s ability to understand the trial’s purpose, potential risks, and their rights as a participant. Healthcare professionals explain the study in detail and ensure the person can make an informed decision about participation. This process respects the person’s autonomy while protecting their well-being throughout the research study.^[25]