Volatile inhalant-induced psychotic disorder

Essential (Required) Features:

• The presentation is characterized by psychotic symptoms (e.g., delusions, hallucinations, or disorganized thinking or behaviour) that develop during or soon after intoxication with or withdrawal from volatile inhalants.
• The intensity or duration of the psychotic symptoms is substantially in excess of psychotic-like disturbances of perception, cognition, or behaviour that are characteristic of Volatile Inhalant Intoxication or Volatile Inhalant Withdrawal.
• The symptoms are not better accounted for by another mental disorder such as Schizophrenia or a Mood Disorder with psychotic symptoms. Evidence supporting a diagnosis of another mental disorder would include psychotic symptoms preceding the onset of volatile inhalant use, the symptoms persisting for a substantial period of time after cessation of volatile inhalant use or withdrawal (e.g., 1 month or more), or other evidence of a pre-existing mental disorder with psychotic symptoms (e.g., a history of prior episodes not associated with volatile inhalant use).
• The symptoms are not a manifestation of another medical condition.
• The symptoms cause significant distress or significant impairment in personal, family, social, educational, occupational or other important areas of functioning.

When making a diagnosis of Volatile Inhalant-Induced Psychotic Disorder, an additional diagnosis indicating the related pattern of volatile inhalant use should also be assigned. These include Episode of Harmful Use of Volatile Inhalants, Harmful Pattern of Use of Volatile Inhalants, and Volatile Inhalant Dependence. A diagnosis of Volatile Inhalant Intoxication or Volatile Inhalant Withdrawal may also be assigned if applicable.

Additional Clinical Features:

• Volatile Inhalant-Induced Psychotic Disorder may present varying patterns of symptoms that vary according to the characteristics of the user (e.g., genetics, metabolism, personality factors). Volatile Inhalant use in higher amounts or over longer periods of time is more likely to be associated with the development of a Volatile Inhalant-Induced Psychotic Disorder.
• Symptoms of Volatile Inhalant-Induced Psychotic Disorder usually resolve or improve after sustained cessation of volatile inhalant use.
• The duration of Substance Withdrawal for some substances can be protracted. For substances with more protracted withdrawal periods, the onset of symptoms of Substance-Induced Psychotic Disorder can occur up to several weeks after the cessation of substance use. Substance-Induced Psychotic Disorder symptoms related to substances with more protracted withdrawal periods may also last for correspondingly longer periods of time.
• In cases in which multiple psychoactive substance are used, it is often challenging to distinguish which substance is the cause of the Substance-Induced Psychotic Disorder. When the specific etiological substance cannot be determined, a diagnosis of Substance-Induced Psychotic Disorder Due to Multiple Specified Psychoactive Substances including Medications may assigned. In cases of multiple psychoactive substance use in which more than one specific substance can be identified as a cause of the Substance-Induced Psychotic Disorder, the corresponding specific Substance-Induced Psychotic Disorder diagnoses should be given instead.

Boundary with Normality (Threshold):

• Symptoms of Volatile Inhalant-Induced Psychotic Disorders should be differentiated from transient physiological aftereffects of intoxication (‘hangover effect’). The duration or severity of the symptoms in Volatile Inhalant-Induced Psychotic Disorders must be in excess of ‘hangover effects’ of Volatile Inhalants and result in significant distress or impairment of functioning.

Boundaries with Other Disorders and Conditions (Differential Diagnosis):

• Boundary with Volatile Inhalant Intoxication and Volatile Inhalant Withdrawal: Mental or behavioural symptoms that occur during Volatile Inhalant Intoxication or Volatile Inhalant Withdrawal should only be used as a basis for diagnosing a Volatile Inhalant-Induced Psychotic Disorder if the intensity or duration of the symptoms is substantially in excess of those that are characteristic of Volatile Inhalant Intoxication or Volatile Inhalant Withdrawal and the symptoms are sufficiently severe to warrant specific clinical attention.
• Boundary with Episode of Harmful Use of Volatile Inhalants, Harmful Pattern of Use of Volatile Inhalants, or Volatile Inhalant Dependence: The impact of repeated or continuous use of volatile inhalants characteristic of Harmful Pattern of Use of Volatile Inhalants and Volatile Inhalant Dependence may include Volatile Inhalant-Induced Psychotic Disorder. Volatile Inhalant-Induced Psychotic Disorders can also be associated with a single episode of volatile inhalant use. In such cases, a Volatile Inhalant-Induced Psychotic Disorder should be diagnosed together with a primary diagnosis of Episode of Harmful Use of Volatile Inhalants, Harmful Pattern of Use of Volatile Inhalants, or Volatile Inhalant Dependence.
• Boundary with mental disorders not induced by volatile inhalants: Volatile Inhalant-Induced Psychotic Disorders are differentiated from mental disorders with similar features that are not induced by volatile inhalants on the basis of their onset, course and clinical features. A diagnosis of Volatile Inhalant-Induced Psychotic Disorder requires evidence from history, physical or mental examination, or laboratory findings of recent volatile inhalant use, intoxication or withdrawal. Most Volatile Inhalant-Induced Mental Disorders resolve or improve within several weeks of cessation of volatile inhalant use. Mental disorders not induced by volatile inhalants may precede the onset of volatile inhalant use or may continue to be symptomatic during periods of sustained abstinence. The co-occurrence of volatile inhalant use or withdrawal and onset of symptoms of mental disorders should not be taken as evidence for a presumptive diagnosis of a Volatile Inhalant-Induced Psychotic Disorder. Some people use substances to suppress symptoms of mental disorders (e.g., Schizophrenia and Other Primary Psychotic Disorders, Mood Disorders, Anxiety and Fear-Related Disorders, Personality Disorders) and full symptomatic presentations only emerge upon cessation or reduction in substance use. Furthermore, volatile inhalant use can exacerbate symptoms or precipitate an episode of a pre-existing mental disorder. Finally, volatile inhalant use may be associated with but not aetiologic for new onset of symptoms of a mental disorder. Although a diagnosis of a Volatile Inhalant-Induced Psychotic Disorder should not be assigned under these circumstances, an additional diagnosis of Episode of Harmful Use of Volatile Inhalants, Harmful Pattern of Use of Volatile Inhalants, or Volatile Inhalant Dependence may still be appropriate.