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/pownloc]

I heard a podcast about the Habsburg dynasty a few days ago. Lots of them were nuts and all inbred to a certain degree. The one that stands out to me, in relation to this post, was a young woman in the family who was tormented by the delusion that a full sized, glass grand piano was physically imbedded in her abdomen. She apparently felt that even the slightest of movements could shatter the piano and shred her to pieces from the inside. I have no idea whether or not this is rooted in the same psychosis but felt to me to be similar in several ways.