Behavioural addiction happens when a person loses control over an activity that brings pleasure, even when it causes harm to their life, relationships, or health. Unlike substance addictions that involve drugs or alcohol, these addictions center on behaviors like gambling, gaming, or shopping that activate the brain’s reward system in powerful ways.

Introduction: When to Seek Diagnostics

Recognizing when a behavior has crossed the line from a hobby into an addiction can be difficult, especially because many of these activities are part of everyday life. You might wonder if your habit of checking social media, playing video games, or shopping online has become something more serious. The question many people ask themselves is simple but profound: “Why do I keep doing this?”^[1]

Anyone who suspects they might have a behavioural addiction—meaning a pattern of repeated behavior that feels out of control—should consider seeking diagnostic help. This is particularly important if you find yourself unable to stop an activity even though you know it is causing problems in your daily life. Perhaps you’ve made promises to yourself or loved ones to cut back, but you keep returning to the behavior. Maybe friends or family have expressed concern, or you notice the activity is interfering with work, school, or important relationships.^[2]

It’s advisable to seek diagnostics when several warning signs appear together. If you spend more time on the behavior than you intended, feel it has gotten out of control, continue despite negative consequences, or experience strong discomfort when you cannot engage in the activity, these are signals that professional evaluation may be helpful. Other red flags include neglecting responsibilities at home or work, isolating yourself from friends and family, losing interest in activities you once enjoyed, or feeling guilt and shame about the behavior to the point where you hide it from others.^[3]

Unlike substance addictions where the problem may be more visible to outsiders—such as someone appearing intoxicated—behavioural addictions often remain hidden. Someone might perform poorly at work after staying up all night browsing the internet, but the root cause rarely gets detected. This means people with behavioural addictions often suffer in silence, which makes seeking diagnostic help even more crucial.^[4]

Diagnostic Methods for Identifying Behavioural Addiction

The process of diagnosing behavioural addiction begins with a thorough assessment by a healthcare professional, typically involving several steps and tools designed to understand the full picture of a person’s relationship with the behavior in question.^[5]

Initial Clinical Assessment

The first step in diagnosis usually involves a comprehensive evaluation where a mental health professional will talk with you about your behavior patterns, history, and the impact on your life. This conversation helps establish whether the behavior has become compulsive and is causing significant distress or impairment. The clinician will want to understand when the behavior started, how often it occurs, what triggers it, and what happens when you try to stop or reduce it.^[6]

Being honest during this assessment is crucial. Addiction is often accompanied by feelings of shame or embarrassment, which can make people minimize or hide the extent of their behavior. However, accurate information helps healthcare providers make the right diagnosis and develop an effective treatment plan. Your doctor may ask about your responsibilities at work or home, your relationships, your financial situation, and whether you’ve noticed changes in your mood or physical health related to the behavior.^[7]

Specialized Screening Tools and Questionnaires

Healthcare providers use specific diagnostic and screening tools tailored to different types of behavioural addictions. These standardized questionnaires have been developed through research to help identify problem behaviors and measure their severity. For example, there are specialized assessments for workaholism—the compulsive need to work excessively—including instruments like the workaholism battery.^[8]

Other commonly used tools include the compulsive buying scale for shopping addiction, the sexual addiction screening test, the Massachusetts gambling screen for gambling problems, the exercise dependence questionnaire, the Internet addiction test, and the bodybuilding dependency scale. As research continues, new tests are regularly developed, such as the Yale food addiction scale and the Dutch work addiction scale. These tools ask specific questions about your behavior patterns, feelings, and consequences.^[8]

The Minnesota impulsive disorder interview is another diagnostic instrument that helps clinicians assess whether someone’s behavior fits the pattern of an impulse control disorder or addiction. These screening tools typically ask about the frequency of the behavior, whether you’ve tried to cut back, if you experience a “rush” or intense pleasure from the activity, and whether you need to do more of it over time to achieve the same feeling—a phenomenon known as tolerance.^[8]

Diagnostic Criteria and Classification Systems

Mental health professionals rely on standardized classification systems to make formal diagnoses. The Diagnostic and Statistical Manual of Mental Disorders (DSM-5), published by the American Psychiatric Association, provides concrete diagnostic criteria for mental health conditions. In its fifth edition, the DSM-5 recognized behavioural addictions for the first time by including gambling disorder—formerly called pathological gambling—as the only non-substance-related disorder classified under “Substance-Related and Addictive Disorders.”^[1]

Internet gaming addiction was included in the DSM-5 appendix as a condition requiring further study. The DSM-5 recommends using the neutral term “disorder” rather than “addiction” in clinical settings to avoid the potentially negative connotation and uncertain definition that can come with the word addiction.^[1]

Similarly, the International Classification of Diseases (ICD-11), in its eleventh revision, introduced a new category called “Disorders due to substance use or addictive behaviours.” This classification is based on a diagnostic framework that looks at impaired control, repetitive harmful behavior, and continuation or escalation despite negative consequences. The sub-category “Disorders due to addictive behaviours” includes gambling disorder, gaming disorder (a new diagnosis), and residual categories for other specified and unspecified conditions.^[3]

Distinguishing Addiction from Normal Interest

One of the most important aspects of diagnosis is determining whether a behavior represents a normal hobby or interest versus a true addiction. An interest or hobby is generally an activity pursued for fun and enjoyment that doesn’t create major upheaval in daily life. Most people can stop these activities without much effort and shift their focus to something else, especially something important like work or school.^[9]

Addictions, by contrast, tend to become the primary focus of a person’s life, and the rush from the experience quickly overshadows the joy they would get from other activities. During diagnosis, clinicians look for specific patterns: Do you spend more time engaging in the behavior than you meant to? Do you feel the behavior has gotten out of control and that you’re unable to stop? Do you need to increase the amount of time, money, or energy invested in the behavior to feel satisfied? These questions help separate occasional indulgence from compulsive behavior.^[9]

Assessment of Co-occurring Conditions

A thorough diagnostic process also screens for other mental health conditions that commonly occur alongside behavioural addictions. Research suggests that common psychological conditions such as Post-Traumatic Stress Disorder (PTSD), Bipolar Disorder, and Major Depressive Disorder can make a person more likely to develop a behavioural addiction. The relationship between these conditions is complex, with more of an overlap than a direct cause-and-effect link.^[10]

This is sometimes called a dual diagnosis, meaning a person has both a behavioural addiction and another mental health condition. Both conditions may need to be treated simultaneously for recovery to be successful. Additionally, some people present with more than one addiction—for example, gambling and alcohol abuse often occur together. Identifying all these factors during the diagnostic process helps create a comprehensive treatment plan.^[11]

Understanding the Underlying Causes

As part of the diagnostic evaluation, clinicians try to understand what might be driving the addictive behavior. At the heart of many addictions is an emotional or spiritual need—perhaps the need to feel powerful and in control, to feel less lonely, to escape pain, or to manage feelings related to trauma. People who have experienced traumatic events or have frequent feelings of guilt in relation to trauma have a higher risk of engaging in risky and addictive behaviors as a way to distract from difficult thoughts and feelings.^[5]

The exact causes of behavioural addiction are not fully known, but most experts agree they stem from a combination of genetic, mental, environmental, and social factors. Over time, persistent engagement in the addictive behavior causes changes in the brain’s reward system. The behavior triggers a large release of dopamine—a chemical messenger in the brain associated with pleasure. The brain begins to connect the behavior with survival, taking over rational thinking. This means the person needs to continuously repeat the behavior to get a release of dopamine, and when the behavior doesn’t occur, dopamine levels fall, creating intense cravings.^[5]

Physical and Mental Health Evaluation

While behavioural addictions don’t involve substances, they can still have significant effects on physical and mental health. As part of the diagnostic process, healthcare providers may evaluate overall health status, looking for signs that the addiction has taken a physical toll. For instance, excessive exercise addiction might lead to injuries or exhaustion, while gaming addiction might contribute to sleep deprivation, poor nutrition, or lack of physical activity.^[12]

Mental health screening is equally important, as behavioural addiction is often associated with depression and anxiety. Understanding the full scope of how the addiction affects both mind and body helps guide treatment decisions and gives a baseline for measuring improvement over time.^[13]

Diagnostics for Clinical Trial Qualification

For individuals interested in participating in research studies or clinical trials focused on behavioural addictions, there are specific diagnostic procedures and criteria that must be met. Clinical trials often have strict inclusion and exclusion criteria to ensure the study results are reliable and that participants are appropriate for the intervention being tested.^[1]

Standard Diagnostic Procedures for Research

Clinical trials studying behavioural addictions typically require participants to undergo comprehensive diagnostic assessments using the same standardized tools and criteria used in clinical practice. This usually means meeting the diagnostic criteria outlined in the DSM-5 or ICD-11 for a specific behavioural addiction. For gambling disorder, which is the most well-established behavioural addiction in formal diagnostic systems, researchers use the DSM-5 criteria as the standard starting point for diagnosis in clinical studies.^[8]

Participants may need to complete multiple screening questionnaires to confirm the presence and severity of their addiction. For example, someone being screened for a gambling addiction study might complete the Massachusetts gambling screen or similar validated instruments. For internet gaming disorder, participants might complete the Internet addiction test or gaming-specific assessments. The results of these tools help researchers determine if the participant’s symptoms are severe enough to meet the study’s inclusion criteria.^[8]

Severity Assessment and Baseline Measurements

Clinical trials need to establish a baseline measurement of the addiction’s severity before any intervention begins. This allows researchers to measure whether the treatment or intervention being tested actually produces improvement. Participants undergo detailed assessments that quantify various aspects of their addictive behavior—how often they engage in it, how much time or money they spend, how it impacts their functioning, and how distressed they feel about it.^[13]

These baseline assessments often involve structured clinical interviews conducted by trained professionals, self-report questionnaires, and sometimes behavioral tests or measures. For instance, a study of shopping addiction might assess not just the frequency of purchases but also the amount of debt accumulated, the person’s ability to resist impulses in controlled scenarios, and their emotional state before and after shopping episodes.^[13]

Exclusion of Other Conditions

To participate in clinical trials, potential participants often need to undergo testing to rule out other conditions that might interfere with the study results or put the participant at risk. This might include screening for substance use disorders, since many clinical trials want to study behavioural addiction separately from chemical addiction. Participants may also be screened for other mental health conditions that could affect their ability to complete the study or that might require different treatment approaches.^[1]

Medical history and physical examinations may also be required to ensure the participant is healthy enough to undergo the intervention being studied. Some treatments being tested in clinical trials might have side effects or requirements that wouldn’t be safe for people with certain medical conditions.^[13]

Ongoing Monitoring and Follow-up Assessments

Once enrolled in a clinical trial, participants typically undergo regular diagnostic and monitoring assessments throughout the study period. These follow-up evaluations use many of the same tools as the initial diagnostic phase, allowing researchers to track changes over time and determine whether the intervention is working. Participants might complete weekly or monthly questionnaires, attend regular clinical interviews, or undergo periodic functional assessments to measure how their behavior and overall functioning are changing.^[13]

The frequency and type of these assessments depend on what the clinical trial is studying. A trial testing a new form of therapy might have weekly sessions where progress is measured, while a trial studying medication might require monthly blood tests or other medical monitoring in addition to behavioral assessments.^[13]

Research Contributing to Diagnostic Development

Clinical trials not only test treatments but also contribute to improving our understanding and diagnosis of behavioural addictions. Current research continues to explore the similarities and differences between substance addictions, behavioural addictions, and other compulsive behavior conditions like obsessive-compulsive disorder (OCD). Growing evidence from these studies suggests that behavioural addictions resemble substance addictions in many domains, including natural history, how they present clinically, the development of tolerance, co-occurring conditions, shared genetic contributions, brain mechanisms, and response to treatment.^[1]

However, there is currently insufficient data to justify formal classification of many proposed behavioural addictions. The scientific community continues to study conditions such as pornography use disorder, compulsive buying disorder, social network use disorder, work addiction, exercise addiction, compulsive sexual behavior disorder, and food addiction. As research accumulates, diagnostic criteria for these conditions may become more refined and standardized.^[3]

The American Society of Addiction Medicine (ASAM) revised its definition of addiction in 2019 to include both substance use and compulsive behaviors, stating that addiction is “a treatable, chronic medical disease involving complex interactions among brain circuits, genetics, the environment, and an individual’s life experiences.” This evolving understanding, informed by ongoing clinical trials and research, continues to shape how behavioural addictions are diagnosed and treated.^[3]