TIL about Delusional parasitosis, sometimes referred to as phantom infestation, is a psychological disorder in which an individual mistakenly believes their body is overrun by living or inanimate entities. Typical examples of these perceived invaders include bugs, worms, or microbes.

[u/1998199888]

https://en.wikipedia.org/wiki/Delusional_parasitosis

[u/pacificat]

I work with someone in a caretaking role who I believe has this condition. They constantly pick at their skin and state worms or bugs are in there. I don't work with them much but redirection helps and keeping their hands busy with stress balls, crafts, etc