1. a degree of confusion (ranges from disorientation to being perplexed)
2. mood delusions
3. hallucinations (sometimes related to fear of death)
4. overwhelming experiences of anxiety
5. happiness/ecstasy
6. hyperkinetic/akinetic motility disruptions
7. oscillations of mood

University of Illinois at Chicago

- an acute psychotic condition occurring for the very first time in patients from the ages 15-50
- a sudden onset alongside a rapid change  from a state of good health to an intense psychotic condition within a couple hours/few days
- has at least four of the following conditions: confusion of some degree, hallucinations, ecstasy, mood-incongruent delusions, motility disturbances (akinetic/hyperkinetic), concern with death, mood swings
- symptoms may change frequently

Diagnostic criteria for cycloid psychosis

Giné Servén, E., & Boix Quintana, E., et al. (2019, November 7). Considerations of psychotic symptomatology in anti-NMDA encephalitis: Similarity to cycloid psychosis. Clinical case reports. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6935669/ 

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