What we should know about logorrhea"In psychology, logorrhea or logorrhoea (from Ancient Greek λγος logos "word" and ω is a communication disorder that causes excessive wordiness and repetitiveness, which can cause incoherency. Logorrhea is sometimes classified as a mental illness, though it is more commonly classified as a symptom of mental illness or brain injury. This ailment is often reported as a symptom of Wernicke's aphasia, where damage to the language processing center of the brain creates difficulty in self-centered speech."
https://en.wikipedia.org/wiki/Logorrhea_(psychology)