Cannabis use disorder is distinguished from cannabis intoxication, withdrawal, and cannabis-induced mental disorders. Cannabis use disorder refers to problematic cannabis use involving impaired control, social impairment, risky behavior, and pharmacological symptoms like tolerance and withdrawal. Cannabis intoxication, withdrawal, and cannabis-induced mental disorders occur frequently in individuals with cannabis use disorder. When these additional conditions are present, they should be diagnosed alongside cannabis use disorder using specific diagnostic codes.

 Cannabis Use Disorder Differential Diagnosis; Cannabis intoxication, cannabis withdrawal, and cannabis-induced mental disorders.

Approximately 20% to 30% of cannabis users experience symptoms and consequences that align with a cannabis use disorder, while the majority do not encounter significant problems. Differentiating between nonproblematic cannabis use and the disorder can be challenging, as individuals may not attribute social, behavioral, or psychological issues to cannabis, especially in cases involving the use of multiple substances. It is common for individuals referred to treatment by external parties, such as schools, families, employers, or the legal system, to either be unaware or unwilling to acknowledge the extent of their heavy cannabis use and its contribution to the associated problems.

Cannabis Use Disorder Differential Diagnosis; Nonproblematic use of cannabis 

The Differential Diagnoses of Cannabis use disorder are;

- Nonproblematic use of cannabis.
- Cannabis intoxication, cannabis withdrawal, and cannabis-induced mental disorders.



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Cannabis use disorder is characterized by a problematic pattern of cannabis consumption that results in impairment or distress as evaluated with clinical assessment. 

Cannabis Use Disorder 

American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed., Text revision). https://doi.org/10.1176/appi.books.9780890425596

DSM-5-TR

A. A problematic pattern of cannabis use resulting in significant impairment or distress, as indicated by at least two of the following criteria occurring within a 12-month period:
1. Consumption of cannabis in larger amounts or over a longer duration than intended.
2. Persistent desire to reduce or control cannabis use, accompanied by unsuccessful efforts.
3. Devoting substantial time to obtaining cannabis, using it, or recovering from its effects.
4. Experiencing strong cravings or a compelling urge to use cannabis.
5. Repeated cannabis use leads to failure in fulfilling important obligations at work, school, or home.
6. Continuation of cannabis use despite persistent or recurring social or interpersonal issues caused or worsened by its effects.
7. Giving up or reducing significant social, occupational, or recreational activities due to cannabis use.
8. Engaging in cannabis use in physically hazardous situations.
9. Continued cannabis use despite being aware of persistent or recurring physical or psychological problems likely caused or exacerbated by it.
10. Development of tolerance, demonstrated by either: A) A need for significantly increased amounts of cannabis to achieve desired effects or intoxication. B) A noticeably reduced effect with the continued use of the same quantity of cannabis.
11. Experience withdrawal symptoms, either:  A) Meeting the criteria for cannabis withdrawal syndrome (refer to Criteria A and B of the withdrawal criteria).  B) Using cannabis or a closely related substance to relieve or avoid withdrawal symptoms

[DSM-5-TR] Diagnostic Criteria of Cannabis Use Disorder

This includes the intersection of connections and/or research related to cannabis use disorder in other fields of study and research. Such fields include: Behavioral Neuroscience Clinical Psychology Health Psychology

Interdisciplinary Connections & Research Related to Cannabis Use Disorder

Regular cannabis users often rely on the substance to cope with mood disturbances, insomnia, pain, or other issues, and individuals with cannabis use disorder often have concurrent mental disorders. Providers should be attentive to signs and symptoms of cannabis use and intoxication, such as red eyes, cannabis odor, chronic cough, and unusual food cravings. Chronic cannabis use can lead to a lack of motivation akin to persistent depressive disorder. It's important for healthcare professionals to assess cannabis use accurately, as individuals may underreport their usage.

 Associated Features of Cannabis use Disorder

Prevalence data reveals that cannabis use disorder affects both youth and adults, Within the cannabis user population, the prevalence of cannabis use disorder is approximately 20.4% among youth and 30.6% among adults. The 12-month prevalence of DSM-5 cannabis use disorder among adults is around 2.5%, with varying levels of severity. Despite an increasing number of individuals seeking treatment for cannabis-related problems, only a small percentage (7%-8%) of adults with cannabis use disorder receive cannabis-specific treatment, highlighting a significant treatment gap for this condition.

 Prevalence of Cannabis use Disorder

Cannabis use disorder commonly starts during adolescence or young adulthood but can occur at any age. The acceptability and availability of medical and recreational marijuana may influence its development, with increased onset among older adults. Cannabis use disorder typically progresses gradually over time, with increased frequency and quantity of cannabis use. Early onset of cannabis use, particularly before age 15, is a strong predictor of developing cannabis use disorder and other substance use and mental disorders in young adulthood. The perception of cannabis as less harmful than alcohol or tobacco has contributed to its increasing popularity among adolescents. The disorder is associated with risk-taking behaviors, conduct problems, and impairment in daily functioning. In adults, cannabis use disorder often involves daily cannabis use despite adverse consequences and unsuccessful attempts to quit. The rate of cannabis use among middle-aged and older adults is increasing, potentially influenced by availability and social acceptance, especially among the "baby boomer" generation.

 Development and Course of Cannabis use Disorder

Risk and Prognostic factors include: 

- Temperamental 
- Environmental
- Genetic and Physiological

 Risks and Prognostic Factors of Cannabis Use Disorder

Some of the issues when diagnosing Cannabis use Disorder are;
- Sex and Gender-Related
- Culture- Related

 Cannabis Use Disorder- Related Diagnostic Issues

The presence of THCCOOH in urine is commonly used as a marker for detecting cannabis use. However, in frequent users, urine tests can yield positive results for weeks after last use, limiting their usefulness for certain purposes. Interpretation of urine test results requires expertise in testing methods. Despite this limitation, positive urine test results can be helpful when individuals deny cannabis use despite concerns from others. Ongoing developments aim to create more precise blood tests for detecting cannabinoids and explore the potential use of oral fluid tests for roadside drug testing in driving safety efforts.

Cannabis Use Disorder Diagnostic Markers

Cannabis use disorder has been found to be associated with an increased risk of both suicidal and nonsuicidal self-injury in veterans. This association remains significant even after adjusting for various factors such as sociodemographic characteristics, comorbidities, and past trauma. Studies have shown that current substance use disorders, including cannabis use disorder, are linked to a higher risk of suicide, with higher rates observed among both male and female veterans. Additionally, a review of international literature has indicated that chronic cannabis use, rather than acute use, is associated with suicidal thoughts and behavior.

Cannabis Use Disorder Association With Suicidal Thoughts or Behavior

Cannabis use disorder has wide-ranging consequences on various aspects of an individual's life. It can impair psychosocial functioning, cognitive abilities (especially executive functions), and overall health. These impairments can persist even when the individual is not intoxicated. The risk of accidents and compromised safety is increased. Cannabis use disorder is associated with a reduction in goal-directed activity and self-efficacy, leading to difficulties in school or work performance. It also has negative effects on social relationships, often resulting in problems within personal connections. Individuals with cannabis use disorder are more likely to experience reduced life satisfaction and require treatment or hospitalization for mental health issues.

Functional Consequences Cannabis Use Disorder

 Cannabis Use Disorder Differential Diagnosis 

Cannabis use disorder is frequently associated with other substance use disorders, multiplying the risk for any other substance disorder by about nine. It is considered a gateway drug, as cannabis users have a higher probability of using more risky substances in the future. Co-occurring mental disorders, including major depressive disorder, bipolar disorder, anxiety disorders, and personality disorders, are common among individuals with cannabis use disorder. Cannabis use has been linked to an increased risk of psychosis, particularly when used during critical periods. Medical conditions such as cannabinoid hyperemesis syndrome, respiratory disorders, and adverse cardiovascular outcomes can also be associated with regular cannabis use.

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