Fig. 5.

Irregular sleep–wake rhythm due to psychiatric disorder: an example of a wrist actigraphy of a psychiatric out-patient. Treated in a general practitioner setting due to subjective sleep disturbance against a background of depression, addiction with a history of increased alcohol consumption. Hypnotics and drive-enhancing antidepressants were used, and the patient was alcohol-abstinent during the recording period. The actigraphy shows a completely abolished structure of the day-night rhythm, blue triangles corresponding to subjective patient markers corresponding to the limits of bedtime. The continuously recorded activity in the 24-h period appears in black, the light irradiation in yellow. Sleep expert diagnosis: circadian sleep–wake rhythm disorder, an indication for inpatient rhythmic therapy was given