Cyclothymia in Shift / night workers: Prevalence, Risk & Key Differences
| Key things to know | What the evidence shows |
|---|---|
| How common is it? | NE |
| Is it more common among shift / night workers? | Circadian disruption can mimic or exacerbate bipolar-spectrum mood instability |
| Are shift / night workers at higher risk? | Contextually important, not proven prevalence elevation |
| How much higher is the risk? | NE |
| How often can it be missed? | Very High |
| Does it show up differently among shift / night workers? | Strong Yes |
| How might it look different? | Irregular schedules and sleep loss can cause mood/energy changes or destabilize bipolar-spectrum illness; distinguish from primary circadian disruption |
| What commonly occurs alongside it? | Sleep disorders; substance use; depression |
| What can it be confused with? | Shift Work Disorder; sleep deprivation; substance-induced mood symptoms; Bipolar II |
| Common screening tool | TEMPS-A — cyclothymic temperament subscale → clinical evaluation |
| Separate screening tool for shift / night workers | None |
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