A rare psychological or medical term possibly referring to a delusional state where a person believes their own thoughts or inner experiences have external symbolic meanings or significance.
From 'auto-' (self) plus 'symnoia' or possibly 'hypnoia' or relating to 'noia' (mind/thought), though the exact etymology is obscure. This appears to be a very rare or potentially invented term in psychiatric literature.
This term is so rare that even major psychological databases struggle to document it—it might be a forgotten diagnostic category or a term invented by a single researcher that never caught on, showing how medical language is constantly created and abandoned.
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