Daytime sleepiness type is characterized by predominant complaints of excessive fatigue during waking hours or long sleep periods.

University of California, Berkeley

Depending on the substance, one of four types of sleep disturbances occur:
- Insomnia Type
- Daytime Sleepiness Type
- Parasomnia Type
- Mixed Type

Insomnia type and daytime sleepiness type are most common.

It is also necessary to note whether onset occurs during intoxication, during withdrawal, or after medication use.

Specifiers for Substance/Medication-Induced Sleep Disorder

American Psychiatric Association Publishing. (2022). Non–Rapid Eye Movement Sleep Arousal Disorders. In Diagnostic and statistical manual of mental disorders, fifth edition text revision: DSM-5-TR (5th ed., pp. 469–475). section.

Substance/Medication-Induced Sleep Disorder from the DSM-V

Insomnia type is characterized by difficulty falling asleep or maintaining sleep, frequent nocturnal awakenings, or nonrestorative sleep.

Insomnia Type

Mixed type is characterized by multiple types of sleep symptoms in which no symptom predominates.

Mixed Type

A parasomnia is a type of sleep disorder characterized by undesirable and disruptive motor activities or experiences that occur during sleep. These events can take place during either the REM or NREM phases of the sleep cycle.

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