Financial & competing interests disclosure
JD Blom received publishing royalties for Alice in Wonderland Syndrome (Springer Nature, 2020), Katatonie en Dissociatie (AccreDidact/Prelum, 2014), Visuele Hallucinaties en Andere Positieve Visuele Waarnemingsstoornissen (AccreDidact/Prelum, 2013), Hallucinations: Research and Practice (Springer, 2012) and A Dictionary of Hallucinations (Springer, 2010). BA Sharpless received publishing royalties for Sleep Paralysis: Historical, Psychological, and Medical Perspectives (Oxford University Press, 2015), Unusual and Rare Psychological Disorders: A Handbook for Clinical Practice and Research (Oxford University Press, 2017) and Psychodynamic Therapy Techniques: A Guide to Expressive and Supportive Interventions (Oxford University Press, 2019). The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
No writing assistance was utilized in the production of this manuscript.