Psychotic disorder

A cluster of psychotic phenomena that occur during or following psychoactive substance use but that are not explained on the basis of acute intoxication alone and do not form part of a withdrawal state. The disorder is characterized by hallucinations (typically auditory, but often in more than one sensory modality), perceptual distortions, delusions (often of a paranoid or persecutory nature), psychomotor disturbances (excitement or stupor), and an abnormal affect, which may range from intense fear to ecstasy. The sensorium is usually clear but some degree of clouding of consciousness, though not severe confusion, may be present.

Alcoholic:

■ hallucinosis

■ psychosis NOS

Excludes: alcohol- or other psychoactive substance-induced residual and late-onset psychotic disorder ( F10-F19 with common fourth character .7) .6 Amnesic syndrome

A syndrome associated with chronic prominent impairment of recent and remote memory. Immediate recall is usually preserved and recent memory is characteristically more disturbed than remote memory. Disturbances of time sense and ordering of events are usually evident, as are difficulties in learning new material. Confabulation may be marked but is not invariably present. Other cognitive functions are usually relatively well preserved and amnesic defects are out of proportion to other disturbances.

Amnestic disorder, alcohol- or drug-induced

Korsakov's psychosis or syndrome, alcohol- or other psychoactive substance-induced or unspecified

Excludes: nonalcoholic Korsakov's psychosis or syndrome ( F04 ) .7 Residual and late-onset psychotic disorder

A disorder in which alcohol- or psychoactive substance-induced changes of cognition, affect, personality, or behaviour persist beyond the period during which a direct psychoactive substance-related effect might reasonably be assumed to be operating. Onset of the disorder should be directly related to the use of the psychoactive substance. Cases in which initial onset of the state occurs later than episode(s) of such substance use should be coded here only where clear and strong evidence is available to attribute the state to the residual effect of the psychoactive substance. Flashbacks may be distinguished from psychotic state partly by their episodic nature, frequently of very short duration, and by their duplication of previous alcohol- or other psychoactive substance-related experiences.

Alcoholic dementia NOS Chronic alcoholic brain syndrome

Dementia and other milder forms of persisting impairment of cognitive functions

Flashbacks

Late-onset psychoactive substance-induced psychotic disorder

Posthallucinogen perception disorder

Residual:

■ affective disorder

■ disorder of personality and behaviour

Excludes: alcohol- or psychoactive substance-induced:

■ Korsakov's syndrome ( F10-F19 with common fourth character .6)

■ psychotic state ( F10-F19 with common fourth character .5)

.8 Other mental and behavioural disorders

.9 Unspecified mental and behavioural disorder

Mental and behavioural disorders due to use of alcohol

TSee before F10 for subdivisions 1

Mental and behavioural disorders due to use of opioids

TSee before F10 for subdivisions 1

Mental and behavioural disorders due to use of cannabinoids

TSee before F10 for subdivisions 1

Mental and behavioural disorders due to use of sedatives or hypnotics

TSee before F10 for subdivisions 1

Mental and behavioural disorders due to use of cocaine

TSee before F10 for subdivisions 1

Mental and behavioural disorders due to use of other stimulants, including caffeine

TSee before F10 for subdivisions 1

Mental and behavioural disorders due to use of hallucinogens

TSee before F10 for subdivisions 1

Mental and behavioural disorders due to use of tobacco

TSee before F10 for subdivisions 1

Mental and behavioural disorders due to use of volatile solvents

TSee before F10 for subdivisions 1

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