Morgellons (/mɔː(ɹ)ˈdʒɛlənz/), also called Morgellons disease or Morgellons syndrome, is the informal name of a self-diagnosed skin condition that is actually a form of
delusional disorder in which individuals believe they are infested with inanimate material like sand, hairs, thread, or fibers, while in reality no such infestation is present.
[1]